Science Energy and Motion

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

Another name for stored energy is __________ energy.

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 increased, the acceleration of the object _____________.

• increases

• decreases

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

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

• speed or velocity

• gravitational force

The skateboarder will NOT stop unless acted upon by

• balanced forces

• unbalanced forces

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

Velocity is measured using the speed and ___________ of an object.