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60 Cards in this Set

  • Front
  • Back
The ability of a measurement to be reproduced with the same result is a sign of accuracy
false; it is a sign of precision
A kilogram is 1,000 times as large as a gram.
true
A circle graph is based on percentages.
true
Speed is often measured in kilometers per hour
false;meters per hour
A line graph shows the relationship between three variables.
false; 2 variables
When a substance burns matter is created.
false;matter is transferred
Elements on the far left of the periodic table are classified as metals
true
Every atom of the same element has the same atomic number
false; has the same state of matter.
Matter always has mass
true
Matter in which particles are arranged in a repeating geometric pattern is called an amorphous solid
false; crystalline solid
Oil will float on water because oil is less dense than water
true
Temperature is the measure of the average kinetic energy of a substance
true
Pascal's principle explains the relationship between density and buoyancy
false;Archimedes principle
When a gas condenses to a liquid it absorbs heat from its surroundings
false; releases moisture
The rate of evaporation of a liquid decreases a the temperature decreases.
true
Density is an example of a size-dependent property
false; size-independent property
Volume is an example of a size-dependent property
true
One of the chemical properties of acids is that they corrode metal
true
When acids react with bases, a salt is formed
true
A physical property is a characteristic of something that allows it to change to something new
false; chemical property
The loss of beachfront due to erosion of sand by the ocean is an example of physical weathering
true
Motion is a change in direction
false; position
If you are driving up a curvy mountain road, your displacement would be greater than your distance
false; less
A line on a speed-time graph with a steep slope indicates a greater speed
true
To find acceleration, subtract the final velocity from the initial velocity and divide by the time
false; subtract the initial speed from the final speed
The slope of the line on a speed-time graph tells the speed
false;acceleration
A falling leaf has less momentum than a pile of leaves on the ground
false; more
As a moving objects velocity decreases, its momentum decreases
true
The momentum before a collision of three objects is always greater than the momentum after the collision.
false; equal to
Earth exerts an unbalanced force on a ball thrown into the air
true
Balanced forces acting on an object cause the object to accelerate
false;unbalanced
Cars, airplane wings and bike helmets are built in a streamlined shape to reduce inertia
false;friction
The force of gravity causes all objects near Earth's surface to fall with an acceleration of 20 m/s2
false;9.8m/s2
The critical velocity is the highest velocity that can be reached by a falling object
false;terminal
A car goes around a curve at a constant speed. There is not a net force acting on it.
false; there is
An object with a mass of 9.0 kg has an acceleration of 3m/s2. The force acting on it is 3N
false;27N
The outward force from a surface is the net force
true
When you push downward on Earth to make a pole vault, earth exerts an equal force on the pole
true
Forces always act alone.
false; in pairs
The acceleration of an object is always in the direction of the net force acting on it
true
To go around a curve, a bicycle must feel a force in the direction of its motion
false;in the opposite direction
You see a kite start to fly because heat has been transferred to it
false; kinetic energy
As you decrease the velocity of a car, you increase its kinetic energy
false; decrease kinetic energy
A heated iron has chemical energy
true
In a electric mixer, electrical energy is changed into thermal energy
false; kinectic
A turbine turns kinetic energy into electrical energy
false; generator
The burning of fossil fuels can result in acid rain
true
Fossil fuels are a renewable resource
false; nonrenewable
Geothermal energy in nonrenewable
false; alternative energy
Most energy sources have some kind of negative consequence
true
Water waves can move a piece of cork floating on top of the water only in an up and down motion
true
Mechanical waves can travel in any type of medium
true
Radio waves are the only type of electromagnetic wave that is a transverse wave
false
Sound wavs are compressional waves
true
The amplitude of a wave is the distance between a point on one wave and the identical point on the next wave
false;it is 1/2 the distance between a crest and a trough
In general, the more energy a wave has the greater its amplitude
true
The speed of light depends on the medium it travels through
true
You can see yourself in a mirror because of the wave property called interference
false; reflection
Refraction occurs when the amplitude of a wave changes as it goes from one medium to another
false; bends
You can hear sounds around the corner of a door due to the wave property called diffraction
true