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233 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Speed is?
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a measure of how fast something is moving, always measured in terms of a unit of distance divided by a unit of time, the distance covered per unit time
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Chapter 2 Linear Motion
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When you look at the speedometer in a moving car, you can see the car's
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instantaneous speed
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chapter 2 Linear Motion
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Acceleration is defined as the CHANGE in
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velocity divided by the time interval
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Chapter 2 Linear Motion
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As an object falls freely in a vacuum, its
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velocity increases
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Chapter 2 Linear Motion
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In the absence of air resistance, objects fall at constant
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acceleration
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Chapter 2 Linear Motion
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A ball is thrown upwards and caught when it comes back down. In the absence of air resistance, the speed of the ball caught would be
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the same as the speed it had when thrown upwards
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Chapter 2 Linear Motion
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Suppose an object is in free fall. Each second the object falls
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a larger distance than in the second before
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Chapter 2 Linear Motion
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If you drop a feather and a coin at the same time in a tube filled with air, which will reach the bottom of the tube first?
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The coin
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Chapter 2 Linear Motion
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Consider drops of water leaking from a water faucet. As the drops fall they
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get farther apart.
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Chapter 2 Linear Motion
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A ball tossed vertically upward rises, reaches its highest point, and then falls back to its starting point. During this time the acceleraton of the ball is always
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directed downward
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Chapter 2 Linear Motion
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A ball is thrown straight up. At the top of its path its instantaneous speed is
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0 m/s
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Chapter 2 Linear Motion
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When something falls to the ground, it accelerates.This acceleration is called the acceleration due to gravity and is symbolized by the letter g. What is the value of Earth's surface?
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about 10 m/s^2
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Chapter 2 Linear Motion
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If a freely falling object were somehow equipped with a speedometer, its speed reading would increase each second by
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about 10 m/s
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Chapter 2 Linear Motion
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If you drop a feather and a coin at the same time in a vacuum tube, which will reach the bottom of the tube firs?
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Neither-they will both reach the bottom a the same time
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Chapter 2 Linear Motion
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A vector is a quantity that has
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magnitude and direction
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Chapter 3 Projectile Motion
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A scalar is a quantity that has
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magnitude
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Chapter 3 Projectile Motion
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When representing velocity as a vector
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the direction of the arrow shows the direction of motion, the length of the arrow represents the speed, the length of the arrow is drawn to a suitable scale
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Chapter 3 Projectile Motion
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Which of the following would NOT be considered a projectile?
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a cannonball rolling down a slope
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Chapter 3 Projectile Motion
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At the instant a ball is thrown horizontally with a large force, an identical ball is dropped from the same height. Which ball hits the ground first?
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Neither. They will hit the ground at the same time
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Chapter 3 Projectile Motion
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A ball is thrown into the air at some angle. At the very top of the ball's path it's velocity is
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entirely horizontal
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chapter 3 Projectile Motion
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In the absence of air resistance, the angle at which a thrown ball will go the farthest is
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45 degrees
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Chapter 3 Projectile Motion
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A ball thrown in the air will never go as far as physics ideally would predict because
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air friction slows the ball
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Chapter 3 Projectile Motion
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At what part of a path does a projectile have minimum speed?
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At the top of its path
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Chapter 3 Projectile Motion
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A projectile is fired horizontally in a vacuum. The projectile maintains its horizontal component of speed because it
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is not acted on by any horizontal forces.
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Chapter 3 Projectile Motion
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Jose can jump vertically 1 meter from his skateboard when it is at rest. When the skateboard is moving horizontally, Jose can jump
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no higher
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Chapter 3 Projectile Motion
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In Chapter 2, you learned about "hang time," the time a jumper's feet are off the ground in a vertical jump. If the jumper runs horizontally and has the same vertical component of takeoff velocity, hang time will be
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no different
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Chapter 3 Projectile Motion
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The law of inertia states that an object
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will continue moving at the same velocity unless an outside force acts on it, will continue moving in a straight line unless an outside force acts on it, that is not moving will never move unless a force acts on it, at rest will remain at rest unless aced in by an outside force
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Chapter 4
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The law of inertia applies to
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both moving and non moving objects
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Chapter 4
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A sheet of paper can be withdrawn from under a container of milk without toppling i if the paper is jerked quickly. he reason this can be done is that
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The milk carton has inertia
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Chapter 4
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Compared to its weight on Earth, a 10-kg object on the moon will weigh
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less
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Chapter 4
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The force required to maintain an object at a constant speed in free space is equal to
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zero
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Chapter 4
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A 15-N force and a 45-N force act on an object in opposite directions. What is the net force on the object?
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30 N
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Chapter 4
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A girl whose weight is 500 N hangs from the middle of a bar supported by two vertical strands of rope. What is the tension in each strand?
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250 N
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Chapter 4
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Friction is a force that always acts
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opposite to an object's motion
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Chapter 4
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Which has more mass, a kilogram of feathers or a kilogram of iron?
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neither- they both have the same mass
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Chapter 4
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An object weighs 30 N on Earth. A second object weighs 30 N on the moon. Which has the greater mass?
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the one on the moon
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Chapter 4
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A force can be simply defined as a push or pull
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True
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Chapter 4
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The amount of matter in an object is its weight
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False
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Chapter 4
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The SI unit of mass is the newton
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False
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Chapter 4
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The force due to gravity acting on an object is its mass
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False
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Chapter 4
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The SI unit of force is the kilogram
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False
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Chapter 4
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An astronaut weighs the same on Earth as in space
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False
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Chapter 4
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If a hockey puck were to slide on a perfectly frictionless surface, it will eventually slow down because of its inertia
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False
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Chapter 4
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Inertia is the property that every material object has; inertia resists changes in an object's state of motion.
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True
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Chapter 4
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How does acceleration of an object change in relation to its mass? It is
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inversely proportional
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Chapter 5 Newton's Second Law of Motion- Force and Acceleration
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The acceleration produced by a net force on an object is
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inversely proportional to the mass of the object, directly proportional to the magnitude of the net force, in the same direction as the net force
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Chapter 5 Newton's Second Law of Motion- Force and Acceleration
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When a woman stands with two feet on a scale, the scale reads 280 N. When she lifts one foot, the scale reads
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280 N
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Chapter 5 Newton's Second Law of Motion- Force and Acceleration
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Suppose the force of friction on a sliding object is 25 N. The force needed to maintain a constant velocity is
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25 N
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Chapter 5 Newton's Second Law of Motion- Force and Acceleration
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A book weighs 4N. When held at rest in your hands, the net force on the book is
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0 N
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Chapter 5 Newton's Second Law of Motion- Force and Acceleration
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A girl pulls on a 10-kg wagon with a constant force of 20 N. What is the wagon's acceleration?
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2 m/s^2
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Chapter 5 Newton's Second Law of Motion- Force and Acceleration
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An object has a constant mass. A constant force on the object produces constant
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Acceleration
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Chapter 5 Newton's Second Law of Motion- Force and Acceleration
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A force of 3 N accelerates a mass of 3 kg at the rate of 1 m/s^2. The acceelration of mass of 6kg acted upon by a force o 6N is
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the same
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Chapter 5 Newton's Second Law of Motion- Force and Acceleration
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Suppose a particle is accelerated through space by a constant 10-N force. Suddenly the particle encounters a second force of 10-N in a direction opposite to that force of the first force. The particle
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continues at the speed it had when it encountered the second force
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Chapter 5 Newton's Second Law of Motion- Force and Acceleration
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Pressure is defined as
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force per area
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Chapter 5 Newton's Second Law of Motion- Force and Acceleration
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The unit of pressure is
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newtons per square meter (or pascals)
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Chapter 5 Newton's Second Law of Motion- Force and Acceleration
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A tennis ball and a solid steel ball with the same diameter are dropped at the same time. Which ball has the greater force acting on it?
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The steel ball
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Chapter 5 Newton's Second Law of Motion- Force and Acceleration
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Aunt Minnie throws a rock downward, and air resistance is negligible. Compared to a rock that is dropped, the acceleration of the rock after it is thrown is
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the same
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Chapter 5 Newton's Second Law of Motion- Force and Acceleration
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If the force acting on a cart doubles. What happens to the cart's acceleration?
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It doubles
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Chapter 5 Newton's Second Law of Motion- Force and Acceleration
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Whenever an object exerts a force on another object, the second object exerts a force of the same magnitude, but in the opposite direction to that of the first object.
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Always true
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Chapter 6 Newton's Third Law of Motion
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Forces always occur
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in pairs
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Chapter 6 Newton's Third Law of Motion
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A player hits a ball with a bat. The action force is the impact of the bat against the ball. What is the reaction to this force?
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The force of the ball against the bat
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Chapter 6 Newton's Third Law of Motion
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As a ball falls, the action force is the pull of Earth's mass on the ball. What is the reaction to this force?
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The pull of the ball's mass on Earth
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Chapter 6 Newton's Third Law of Motion
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A person is attracted towards the center of Earth by a 440-N gravitational force. The force with which Earth is attracted toward the person is
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440 N
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Chapter 6 Newton's Third Law of Motion
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If a horse pulls on a wagon at res, the wagon pulls back equally on the horse. Can the wagon be set into motion?
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Yes, because there is a net force acting on the wagon.
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Chapter 6 Newton's Third Law of Motion
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According to Newton's third law, if you push gently on something, it will push
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gently on you.
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Chapter 6 Newton's Third Law of Motion
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Earth pulls on the moon, and similarly he moon pulls on Earth. This is evidence that the
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Earth' and moon are simply pulling on each other, Earth's and moon's pulls compromise an action-reaction pair.
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Chapter 6 Newton's Third Law of Motion
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Bronco the skydiver falls toward Earth. The attraction of Earth on Bronco pulls him down. The reaction to this force is
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Bronco pulling up on Earth
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Chapter 6 Newton's Third Law of Motion
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A force is exerted on the tires of a car to accelerate the car along the road. The force is exerted by the
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road
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Chapter 6 Newton's Third Law of Motion
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A karate chop delivers a blow of 2300 N to a board that breaks. The force that acts on the hand during this feat
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is 2300 N
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Chapter 6 Newton's Third Law of Motion
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A woman weighing 550 N sits on the floor. She exerts a force on the floor of
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550N
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Chapter 6 Newton's Third Law of Motion
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Two people pull on a rope in a tug-of-war. Each pulls with 400 N force. What is the tension in the rope?
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400 N
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Chapter 6 Newton's Third Law of Motion
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Which has more momentum, a large truck moving at 30 miles per hour or a small truck moving at 30 miles per hour?
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The large truck
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Chapter 7 Momentum
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Compared to a sports car moving at 30 miles per hour, the same sports car moving at 60 miles per hour has
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twice as much momentum
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Chapter 7 Momentum
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If the momentum of an object changes and its mass remains constant,
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it is accelerating (or decelerating), there is a force acting on it, its velocity is changing
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Chapter 7 Momentum
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The momentum change of an object is equal to the
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impulse acting on it
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Chapter 7 Momentum
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In order to increase the final momentum of a golf ball, we could
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increase the force acting on it, follow through when hitting the ball, increase the time of contact with the ball, swing as hard as possible
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Chapter 7 Momentum
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Momentum of a system is conserved only when
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there is no net external force acting on the system
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Chapter 7 Momentum
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A collision is considered elastic if
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There is no lasting deformation, the objects don't stick together, the objects that collide don't get warmer, after the collision, the objects have the same shape as before the collision
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Chapter 7 Momentum
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Which of the following has the largest momentum
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a pickup truck traveling down the highway
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Chapter 7 Momentum
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A freight train rolls along a track with considerable momentum. If it were to roll at the same speed but had twice as much mass, its momentum would be
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doubled
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Chapter 7 Momentum
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A car traveling along the highway needs a certain amount of force exerted on it to stop. More stopping force may be required when the car has
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less stopping distance, more momentum, more mass
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Chapter 7 Momentum
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A 1-N apple falls to the ground. The apple hits the ground with an impact of
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1 N
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Chapter 7 Momentum
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A small economy car (low mass) and a limousine (high mass) are pushed from rest across a parking lot, equal distances with equal forces. he car that receives the greater impulse is the
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limousine
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Chapter 7 Momentum
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A 2-kg ball is thrown at 3 m/s. What is the ball's momentum?
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6 kg*m/s
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Chapter 7 Momentum
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A 4.0-kg ball has a momentum of 20.0 kg*m/s. What is the ball's speed?
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5.0 m/s
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Chapter 7 Momentum
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In physics, work is defined as
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force times distance
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Chapter 8 Energy
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If you lift two loads up one story, how much work do you do compared to lifting just one load up one story?
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Twice as much
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Chapter 8 Energy
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If you lift one load up two stories, how much work do you do compared to lifting one load up only one story?
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Twice as much
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Chapter 8 Energy
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If Nellie Newton pushes an object with twice the force for twice the distance, she does
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four times the work
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Chapter 8 Energy
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The unit of work is the
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joule
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Chapter 8 Energy
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Power is defined as the
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work done on an object divided by the time taken to do the work
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Chapter 8 Energy
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The unit of power is the
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watt
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Chapter 8 Energy
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Which has greater linear speed, a horse near the outside rail of a merry-go-round or a horse near the inside rail?
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The outside horse
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Chapter 9 Circular Motion
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Which has the greater angular speed, a horse near the outside rail of a merry-go-round or a horse near the inside rail
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Neither-they both have the same angular speed
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Chapter 9 Circular Motion
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Which of the following is NOT a unit of rotational speed?
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Meters per second
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Chapter 9 Circular Motion
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What is the direction of the force that acts on clothes in the spin cycle of a washing machine?
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Inward
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Chapter 9 Circular Motion
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A tin can whirled on the end of string moves in a circle because
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there is an inward force acting on the can
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Chapter 9 Circular Motion
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If you whirl a tin can on the end of a string and the string suddenly breaks, the can will
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fly off, tangent to its circular path
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Chapter 9 Circular Motion
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A car travels in a circle with constant speed. The net force on the car
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is directed toward the center of the curve
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Chapter 9 Circular Motion
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When a wrench is slid spinning over a frictionless tabletop, its center of gravity follows
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A regular straight-line path
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Chapter 10 Center of Gravity
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In which of the following is the center of gravity located at a point where there is no mass
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donut
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Chapter 10 Center of Gravity
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An object will fall over if its center of gravity is
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not over its area of support
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Chapter 10 Center of Gravity
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If an object is in unstable equilibrium, any displacement will
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lower its center of gravity
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Chapter 10 Center of Gravity
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If an object is in stable equilibrium, any displacement will
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raise its center of gravity
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Chapter 10 Center of Gravity
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If an object in neutral equilibrium, any displacement will
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neither raise nor lower its center of gravity
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Chapter 10 Center of Gravity
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The center of mass of the solar system
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varies as the planets move
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Chapter 10 Center of Gravity
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A ball resting on the floor is in what kind of equilibrium
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neutral
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Chapter 10 Center of Gravity
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Torque is defined as
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force times lever arm
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Chapter 11 Rotational Mechanics
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Suppose you try loosening a nut with a wrench, and the nut doesn't give at all. You increase your chance of success if you
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have a friend help you pull on the wrench, be sure to exert force perpendicular to the lever arm, exert a larger force, extend the lever arm
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Chapter 11 Rotational Mechanics
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If a football is kicked so the force on the ball is going through its center of gravity, the ball will
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move without any tumbling or spinning
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Chapter 11 Rotational Mechanics
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The resistance an object has to change in its rotational state of motion is called rotational
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inertia
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Chapter 11 Rotational Mechanics
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Which has more rotational inertia, a bicycle wheel or a solid disk of the same mass and diameter?
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the wheel
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Chapter 11 Rotational Mechanics
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Suppose a huge rotating cloud of particles in space gravitates together to form a dense ball. As the cloud shrinks in size it rotates
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faster
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Chapter 11 Rotational Mechanics
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Two people sit on a balanced seesaw. When one person leans toward the center of the seesaw, that person's end of the seesaw will
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rise
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Chapter 11 Rotational Mechanics
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Newton hypothesized that the moon
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is a projectile, is falling around Earth, has tangential velocity that prevents it from falling into Earth, is actually attracted to Earth
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Chapter 12 Universal Gravitation
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If the mass of Earth increased, with no change in radius, your weight would
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increase also
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Chapter 12 Universal Gravitation
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If the radius of Earth decreased, with no change in mass, your weight would
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increase
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Chapter 12 Universal Gravitation
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If the Earth's mass decreased to one half its original mass, with no change in radius, then your weight would
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decrease to one half your original weight
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Chapter 12 Universal Gravitation
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The gravitational force between two massive spheres
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is always an attraction, depends on how massive they are, depends inversely on the square of the distances between them
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Chapter 12 Universal Gravitation
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A very massive object A and less massive object B move toward each other under the influence of mutual gravitation. Which force, if either, is greater?
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Both forces are the same
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Chapter 12 Universal Gravitation
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Two objects move toward each other because of gravitational attraction. As the objects get closer and closer, the force between them
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increases
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Chapter 12 Universal Gravitation
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At the center of every atom is a mass-filled region called the
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nucleus
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Chapter 17 he Atomic Nature of Matter
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What is the most abundant element in the known universe?
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Hydrogen
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Chapter 17 he Atomic Nature of Matter
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Atoms combine together to form
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molecules
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Chapter 17 he Atomic Nature of Matter
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To see a molecule you should use
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an electron microscope
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Chapter 17 he Atomic Nature of Matter
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Assuming all the atoms exhaled by Julius Caesar in his last dying breathe are still in the atmosphere, then it is likely that we breathe one of those atoms
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with each single breath
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Chapter 17 he Atomic Nature of Matter
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Brownian motion has to do with
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random motions of atoms and molecules
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Chapter 17 he Atomic Nature of Matter
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In an electrically neutral atom, the number of protons in the nucleus is balanced by an equal number of
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electrons
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Chapter 17 he Atomic Nature of Matter
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Which is the smallest particle of those listed below
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a proton
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Chapter 17 he Atomic Nature of Matter
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The reason a granite block is mostly empty space because the atoms in granite are
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mostly empty space themselves
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Chapter 17 he Atomic Nature of Matter
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The air in your classroom has
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mass, energy, weight
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Chapter 17 he Atomic Nature of Matter
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When a nucleon is electrically neutral, it is called
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a neutron
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Chapter 17 he Atomic Nature of Matter
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What determines how atoms combine to form molecules?
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The arrangement of electrons
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Chapter 17 he Atomic Nature of Matter
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Elements that are above or below each other in periodic table have one more or one less
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electron shell
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Chapter 17 he Atomic Nature of Matter
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Keep heating a gas and you'll have a
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plasma
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Chapter 17 he Atomic Nature of Matter
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Crystals are
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an orderly arrangement of atoms in a substance
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Chapter 18 Solids
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Density is defined as
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mass divided by volume
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Chapter 18 Solids
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The density of a steel rod is determined by the
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spacing between atoms in the rod
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Chapter 18 Solids
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When a solid block of material is cut in half, its density is
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unchanged
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Chapter 18 Solids
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Which has the greater density, a lake full of water or a cup full of lake water?
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Both have the same density
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Chapter 18 Solids
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If the mass of an object were to double while its volume remained the same, its density would
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double
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Chapter 18 Solids
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A block of iron is heated in a furnace, where it consequently expands. In the expanded condition, its density is
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less
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Chapter 18 Solids
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A 1612-kg metal block has a density of 4979 kg per cubic meter and an approximate volume of
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0.32 cubic meters
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Chapter 18 Solids
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The existence of crystals in many solids was not discovered until ______ became a tool of research in the twentieth century.
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x-rays
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Chapter 18 Solids
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Steel is used in construction girders because it is an excellent ________ material.
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elastic
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Chapter 18 Solids
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If all dimensions of a house were to double, its floor area would go up by a factor of
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4
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Chapter 18 Solids
|
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Which will cool a glass of water faster, ice cubes or the same mass of crushed ice?
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the crushed ice
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Chapter 18 Solids
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Which cooks faster in boiling oil
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A sliced potato
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Chapter 18 Solids
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Suppose all sizes of potatoes are selling at he same price per kilogram. For a given amount of money, you will have a greater mass of potatoes after they are peeled, if you buy
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large potatoes
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Chapter 18 Solids
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Water pressure on a submerged object is greater against the
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bottom of the object
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Chapter 19 Liquids
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The pressure at the bottom of a jug filled with water does NOT depend on the
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surface area of the water
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Chapter 19 Liquids
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Archimedes' principle says that an object is buoyed up by a force that is equal to the
|
weight of the fluid displaced
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Chapter 19 Liquids
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The buoyant force on an object is least when the object is
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partly submerged
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Chapter 19 Liquids
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Lobsters live on the bottom of the ocean. The density of a lobster is
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greater than the density of seawater
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Chapter 19 Liquids
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The density of a submerged submarine is about the same as the density of
|
water
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Chapter 19 Liquids
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Boyle's law relates
|
pressure and volume
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Chapter 20 Gases
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If you squeeze a balloon to one half its original size, the pressure inside
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increases by a factor of 2
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Chapter 20 Gases
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The air in your classroom has
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mass, energy, weight, temperature
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Chapter 20 Gases
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Bernoulli's principle says that
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Internal fluid pressure decreases as the fluid speed increases
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Chapter 20 Gases
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A barometer is an instrument used for measuring water pressure
|
False
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Chapter 20 Gases
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|
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About 99 percent of Earth's atmosphere is below an altitude of 30 km
|
True
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Chapter 20 Gases
|
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Atmospheric pressure at sea level is about 100,000 Pa
|
True
|
Chapter 20 Gases
|
|
|
Which temperature scale labels the freezing point of water at 0 degrees
|
Celsius
|
Chapter 21 Temperature, Heat, and Expansion
|
|
|
Heat is the
|
energy transferred form one object to another object
|
Chapter 21 Temperature, Heat, and Expansion
|
|
|
Internal energy is the
|
total amount of energy contained in an object
|
Chapter 21 Temperature, Heat, and Expansion
|
|
|
heat is measured in
|
kilo calories, joules, calories
|
Chapter 21 Temperature, Heat, and Expansion
|
|
|
A temperature scale that has 100 degrees between the boiling point and the freezing point of water is the Fahrenheit scale
|
False
|
Chapter 21 Temperature, Heat, and Expansion
|
|
|
The amount of heat required to change the temperature of a unit mass of a substance by 1 degree is its specific heat capacity
|
True
|
Chapter 21 Temperature, Heat, and Expansion
|
|
|
Water contracts when heated from 0 degrees C to 4 degrees C.
|
True
|
Chapter 21 Temperature, Heat, and Expansion
|
|
|
Heat transfer by conduction in metals occurs when
|
electrons bump into atoms and other electrons
|
Chapter 22 Heat Transfer
|
|
|
Heat transfer by convection occurs when
|
large numbers of atoms move from place to place
|
Chapter 22 Heat Transfer
|
|
|
Heat travels from the sun to Earth by
|
radiation
|
Chapter 22 Heat Transfer
|
|
|
Materials that are poor heat conductors are insulators
|
True
|
Chapter 22 Heat Transfer
|
|
|
A good reflector of heat is a poor absorber of heat
|
True
|
Chapter 22 Heat Transfer
|
|
|
The rate of cooling of an object is proportional to the temperature difference between the object and its surroundings
|
True
|
Chapter 22 Heat Transfer
|
|
|
Evaporation is a cooling process and condensation is
|
a warming process
|
Chapter 23 Change of phase
|
|
|
Condensation occurs when matter changes from a
|
gas to a liquid
|
Chapter 23 Change of phase
|
|
|
At high altitudes, the boiling point of water
|
is lower
|
Chapter 23 Change of phase
|
|
|
When water freezes, it
|
gives off energy
|
Chapter 23 Change of phase
|
|
|
When boiling water in the mountains, the time needed to reach the boiling point is
|
less than at sea level
|
Chapter 23 Change of phase
|
|
|
The three common phases of matter are mass, density, and volume
|
False
|
Chapter 23 Change of phase
|
|
|
The process of changing a liquid to a gas is condensation
|
False
|
Chapter 23 Change of phase
|
|
|
The first law of thermodynamics is a restatement of the
|
conservation of energy
|
Chapter 24 Thermodynamics
|
|
|
Adiabatic processes occur in
|
Earth's mantle, the oceans, he atmosphere
|
Chapter 24 Thermodynamics
|
|
|
When work is done by a system and no heat is added to it, the temperature of the system
|
decreases
|
Chapter 24 Thermodynamics
|
|
|
When a volume of air is compressed and no heat enters or leaves, the air temperature will
|
increase
|
Chapter 24 Thermodynamics
|
|
|
Two identical blocks of iron, one at 10 degrees C and the other at 20 degrees C, are put in contact. Suppose the cooler block cools to 5 degrees C and the warmer block warms to 25 degrees C. This would violate the
|
second law of thermodynamics
|
Chapter 24 Thermodynamics
|
|
|
It is possible to wholly convert a given amount of heat energy to mechanical energy
|
False
|
Chapter 24 Thermodynamics
|
|
|
Whenever heat is added to a system, it transforms to an equal amount of some other form of energy
|
True
|
Chapter 24 Thermodynamics
|
|
|
The distance between successive identical parts of wave is called its
|
wavelength
|
Chapter 25 Vibrations and Waves
|
|
|
The Hertz is a
|
unit of frequency
|
Chapter 25 Vibrations and Waves
|
|
|
Which of the following is NOT a transverse wave?
|
sound
|
Chapter 25 Vibrations and Waves
|
|
|
Sound is an example of a
|
longitudinal wave
|
Chapter 25 Vibrations and Waves
|
|
|
A longitudinal wave lacks which of the following properties
|
speed, frequency, wavelength, amplitude
|
Chapter 25 Vibrations and Waves
|
|
|
The amplitude of a wave is the vertical distance from the midpoint to either the crest or the trough of the wave.
|
True
|
Chapter 25 Vibrations and Waves
|
|
|
A wave on a rope whose motion is at right angles to the direction of wave propagation is a longitudinal wave.
|
False
|
Chapter 25 Vibrations and Waves
|
|
|
Compared to the speed of light, sound travels
|
slower
|
Chapter 26 Sound Waves
|
|
|
Sound waves are produced by
|
vibrating objects
|
Chapter 26 Sound Waves
|
|
|
Sound waves in air are a series of
|
periodic disturbances, periodic condensations and rarefactions, high- and low- pressure regions
|
Chapter 26 Sound Waves
|
|
|
Which of the following would be most likely to transmit sound with the highest speed?
|
Steel in a bridge
|
Chapter 26 Sound Waves
|
|
|
A sound wave
|
Longitudinal wave
|
Chapter 26 Sound Waves
|
|
|
Sound waves cannot travel in
|
a vacuum
|
Chapter 26 Sound Waves
|
|
|
The speed of a sound wave depends on
|
the air temperature
|
Chapter 26 Sound Waves
|
|
|
Sound travels faster in air if the air is
|
warm
|
Chapter 26 Sound Waves
|
|
|
If the sounding board were left out of a music box, the music box would
|
make little "plinks" that you could hardly hear
|
Chapter 26 Sound Waves
|
|
|
Resonance occurs when
|
an object is forced to vibrate at its natural frequency
|
Chapter 26 Sound Waves
|
|
|
Noise-canceling earphones are an example of
|
destructive interference
|
Chapter 26 Sound Waves
|
|
|
Beats can be heard when two tuning forks
|
have almost the same frequency and are sounding together
|
Chapter 26 Sound Waves
|
|
|
An explosion occurs 340 km away. Given that sound travels at 340 m/s, the time the sound takes to reach you is
|
more than 200 s
|
Chapter 26 Sound Waves
|
|
|
The Tacoma Narrows Bridge collapsed due to
|
Resonance
|
Chapter 26 Sound Waves
|
|
|
When an object is forced to vibrate at its natural frequency, resonance occurs
|
True
|
Chapter 26 Sound Waves
|
|
|
Sound can travel through solids, liquids, gases, and even a vacuum
|
False
|
Chapter 26 Sound Waves
|
|
|
Almost everything that exists has a natural frequency
|
True
|
Chapter 26 Sound Waves
|
|
|
Even a steel bridge can collapse because of resonance
|
True
|
Chapter 26 Sound Waves
|
|
|
Electromagnetic waves are
|
transverse waves
|
Chapter 27 Light
|
|
|
Electromagnetic waves
|
can travel through a vacuum
|
Chapter 27 Light
|
|
|
Which of these electromagnetic waves has the shortest wavelength?
|
X-rays
|
Chapter 27 Light
|
|
|
Compared to the wavelength of ultraviolet waves, the wavelength of infrared waves is
|
longer
|
Chapter 27 Light
|
|
|
Compared to the velocity of radio waves, the velocity of visible light waves is
|
the same
|
Chapter 27 Light
|
|
|
Which of the following are fundamentally different from the others?
|
Sound waves
|
Chapter 27 Light
|
|
|
The main difference between a radio wave and a light wave is its
|
wavelength
|
Chapter 27 Light
|
|
|
If the sun were to disappear right now, we wouldn't know about it for 8 minutes because it takes 8 minutes
|
for light to travel from the sun to Earth
|
Chapter 27 Light
|
|
|
Which of the following is NOT an electromagnetic wave?
|
Sound
|
Chapter 27 Light
|
|
|
Compared to its speed in air, the speed of light in water is
|
slower
|
Chapter 27 Light
|
|
|
Glass is transparent to visible light, but not to
|
ultraviolet, infrared
|
Chapter 27 Light
|
|
|
Clouds
|
transmit UV light
|
Chapter 27 Light
|
|
|
Electromagnetic waves with higher frequencies have wavelengths that are
|
shorter
|
Chapter 27 Light
|
|
|
Light waves are
|
Transverse waves
|
Chapter 27 Light
|
|
|
Light does not pass through what kind of material
|
Opaque
|
Chapter 27 Light
|
|
|
How far is a light-second?
|
300,000 km
|
Chapter 27 Light
|
|
|
Material that allow light to pass through them in straight lines are called opaque materials
|
False
|
Chapter 27 Light
|
|
|
Light sometimes acts as a wave sometimes as a particle
|
True
|
Chapter 27 Light
|
|
|
The distance light travels in one year is called a light-year
|
True
|
Chapter 27 Light
|
