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84 Cards in this Set
- Front
- Back
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The pitch of a sound is most closely related to the
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frequency of vibrations
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A boy pushes on a parked car with the force of 200 N. The car does not move. How much work does the boy do on the car?
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zero
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The law that states that every object maintains constant velocity unless acted on by an unbalanced force is
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Newton's first law of motion
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Power is measured in
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watts
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A cold-blooded reptile basks on a warm rock in the sun. Its body is warmed by
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conduction and radiation
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Whenever an object is standing still, the value(s) tha is/are always zero is/are
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momentum
speed velocity |
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Which type if electromagnetic waves has the highest frequency?
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gamma rays
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Gravitational potential energy depends on the
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1. acceleration due to gravity
2. the mass of the object 3. the height of the object |
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Absolute zero means
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all atoms stop moving
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An orange looks orange because it
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reflects orange light and absorbs other colors
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According to current regulations, nuclear power plants in the US can be operated for
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40 years
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The transfer of energy as heat caused by the collision of molecules is called
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conduction
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Temperature is
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1. Proportional to the average kinetic energy of molecules
2. asociated with the sensation of hot and cold 3. measured with thermometers |
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A lens that can focus light is called a
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convex lens
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Alpha particles are nuclei of
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helium
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What method of energy transfer does not involve movement of matter
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radiation
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A tug-of-war that results in one team pulling the other across the line is an example of
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unbalanced forces
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Which type of electromagnetic radiation is used to kill cancer cells?
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gamma rays
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The law that states that for every action force there is an equal and opposite reaction force is
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Newton's third law of motion
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The transfer of energy by the movement of fluids or gases with different temperatures is called
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convection
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When the velocity of an object changes, it is acted upon by a
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force
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Acceleration is defined as the change in velocity divided by
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time
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If you divide momentum by velocity, the result is the value of the object's
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mass
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Resonance refers to an effect in which the
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vibration of one object causes another object to vibrate at natural frequencies
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fusion occurs when nuclei
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combine
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The SI unit for acceleration is
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2
m/s |
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The primary source of the sun's energy is
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nuclear fusion
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The distance traveled by an object divided by the time it takes to travel that distance is called
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average speed
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What substance is a very good conductor of transferring energy as heat?
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iron
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If he net force on an object is zero then the object has
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balanced forces
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What kind of waves are used for cooking and communication
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microwaves
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Gravity depends of both
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mass and distance
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Weight is best described as
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the downward force exerted on objects due to gravity.
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What is a factor in calculating momentum?
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speed
direction mass |
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Luring final Spring 2007
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cut apart and study
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The difference between speed and velocity is that velocity included
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direction
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The type of nuclear radiation that can penetrate farthest through matter is called
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neutron emission
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On the Kelvin Temperature scale water freezes at
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273 K
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The very top of a wave is called a
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crest
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Convection currents rise in air because
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cool air descends and hot air rises
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The opposite reaction to fusion is called
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fission
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The law that states that the unbalanced force acting on an object equals the object's mass times its acceleration is
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Newton's second law of motion
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The Fahrenheit temperature scale is defined by which of the following temperatures?
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Water boils at 212 degrees and freezes at 32 degrees.
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Which of the following is not a type of nuclear radiation?
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X-rays
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When objects are moved further apart from each other, the force of gravity
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decreases
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Kinetic energy dependds on
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mass and velocity
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As the kinetic energy of the molecules in a substance increases, the
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temperature of the substance increases
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The effect in which white light separates into different colors is called
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dispersion
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Momentum has both
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velocity and mass
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Radioactive materials have unstable
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nuclei
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On a velocity-time graph, a line with a negative slope indicates that the object is
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slowing down
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What is the speed of an object at rest/
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0 km/h
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Sound travels fastest in
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sea water
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Friction is defined as
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force that opposes motion between two surfaces that are touching
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The SI unit of force, named for the scientist who described the relationship between motion and force, is called the
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newton
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In order to determine speed, you must know
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both time and distance
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Alpha particles
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are positively charged
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A light wave bending through a lens
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refraction
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The units for velocity
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m/s
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This lens can focus light
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convex lens
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the units for Power
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joule
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This wave has the lowest frequency
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radio wave
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This lens cannot focus light and is for nearsightedness
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concave lens
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The units for momentum
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kg x m/s
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ROY G BIV are the colors for this wave
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visible light
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The units for force
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newton
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This wave has the highest frequency
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gamma ray
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A light wave bouncing off a mirror
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reflection
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The units for loudness and softness of a sound
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decibel
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The units for energy and work
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watt
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The temperature of a volume of a gas will change if the pressure of the gas or volume of the gas changes-T/F
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T
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Energy is transferred as heat between two objects at the same temperature. T/F
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F
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It takes more energy as heat to raise the temperature of water by one degree than to raise the temperature of steam by the same amount. T/F
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T
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What is the only method of energy transfer that can take place in a VACUUM?
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RADIATION
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Do machines decrease the amount of energy that is needed to do work?
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NO
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An object weighing 45 N is dropped from the top of a high rise building and falls a distance of 31m to the ground. How much work does gravity do on the object from the time it is dropped to the time it hits the ground.
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Formula for Work = W = fd
f= 45N W = 45(31) d= 31 m W = 1,395 |
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What is 115 F on the Celsius Scale?
F= (C;1.8) 32 C= F-32 ; 0.55 |
46 C
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A 5 kg cat chasing a mouse east at
2.5 m/s has a momentum of ? |
m = vm
m = 5 kg v = 2.5 m/s m = 12.5 m/s east |
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A weightlifter presses a 325 N weight .35 m over his head in 4 seconds. What is the power of the weight lifter?
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Power = p = w/t so you must first find work (w) for this problem
w= fd f= 325 N d = .35 W= ? fd or 325 (.35) w = 113.75 Now find Power p = w/t or work divided by time 113.75 / 4 = 45.5 Watts |
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What is the gravitational potential energy of a 48 kg box that is 9.0 m above the ground?
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P.E. = mgh PE = (48)(9.8)(9) =
m= 48 g = 9.8 h = 9 4233.6 or 4234 J |
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What is -220 on the Kelvin Scale?
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K = C + 273
-220 + 273 = 53 K |
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What is 78 C o the Kelvin Scale?
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K = C + 273
78 + 273 = 351 K |
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A medicine ball has a mass of 4 kg and is thrown with a speed of 1.5 m/s. What is its kinetic energy?
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KE =
m= 4 v = 1.5 K= 1/2 (4) (1.5) (1.5) = 4.5 J |
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Mr. Luring
Integrated Science 2nd Quarter Final December 2008 |
Cut Apart and Study!
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