Science Quiz Unit 1 Lesson 3 (Oct 18)

What happens to a moving car's energy of motion when it collides with a brick wall? (see the illustration)

• The car's energy of motion (kinetic energy) is transferred to the wall and parts of the car.

• The car's potential energy is transferred to the wall.

• All of the car's energy of motion (kinetic energy) is destroyed.

What happened right before this photo was taken?

• There was an elastic collision.

• There was an inelastic collision

What kind of collision is illustrated by Newton's cradle?

• an elastic collision

• an inelastic collision

• both elastic and inelastic collisions

What is the law of conservation of energy?

• Energy cannot be created or destroyed. It can only change form.

• Energy can be created and destroyed.

• A stationary object doesn't have any form of energy.

When this roller coaster moves down the hill and speeds up, what is the relationship between kinetic energy and potential energy?

• The kinetic energy increases and the potential energy decreases.

• The kinetic energy decreases and the potential energy increases.

• Both kinetic energy and potential energy disappear.

When the car stops suddenly but the crash test dummy keeps moving, what is this an example of?

• inertia

• increased potential energy

• energy transfer