Energy and Motion Unit Test Review

Which is kinetic energy?

• the energy of a moving object

• energy that is increasing

• energy that is decreasing

• energy that is stored in the position, or structure, of an object

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Another name for stored energy is

• potential

• kinetic

• thermal

• mechanical

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The law of conservation of energy states that energy cannot be or .

• gained; released

• used; wasted

• created; destroyed

• heated; frozen

As the amount of force on an object increases, the acceleration of the object

• increases

• decreases

• remains constant

• becomes zero

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Which best describes the type of energy that a bike has when it travels on a flat sidewalk?

• kinetic energy

• potential energy

• sound energy

• chemical energy

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The amount of kinetic energy an object has is related to its mass and

• speed

• velocity

• acceleration

• momentum

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The skateboarder will not stop unless acted upon by

• balanced forces

• unbalanced forces

• friction

• gravity

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If two puppies pull on a plastic ring with equal force, the ring does not move. This is an example of

• balanced forces

• unbalanced forces

• acceleration

• friction

When an elevator is accelerating upward in a building, there are unbalanced forces acting on it.

• True

• False

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How does the energy change when work is done on an object?

• It increases

• It decreases

• It remains the same

• It depends on the object

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