7th grade topic # 1 Quiz A

Physical Science – Potential & Kinetic Energy

____1. Which of the following correctly describes energy?

A. can be created B. can be destroyed

C. cannot change form D. can cause change

____2. A golf ball is dropped from Point “A” as shown in the diagram below.

Is the total energy of the ball greater at point A or point B?

A. / The total energy is greater at A.
B. / The total energy is greater at B.
C. / Points A and B have the same amount of energy
D. / The total energy cannot be determined from the diagram.

____3. A kite stuck in a tree has ____ energy.

A. / potential / B. / chemical
C. / kinetic / D. / thermal

____4. We dropped a golf ball from 100 cm in class. It bounced back to 60cm. Why did it not return to the 100 cm mark?

A. Energy was destroyed while it fell.

B. Energy was added to it when it hit the ground.

C. Energy was transferred when it hit the ground.

D. Energy was created while it rose back up.

_ ____5. Which of these has LEAST amount of kinetic energy?

A. / A ping pong ball / B. / A baseball

C. A tennis ball D. A bowling ball

____6. When a rubber band is stretched back, it has ____ energy.

A. / Potential / B. / electrical
C. / kinetic / D. / nuclear

____7. Using the diagram below, where would the cannon ball have the most kinetic energy?

A. / Position A / B. / Position B
C. / Position C / D. / Position D

_____8. Which of the following is an example of potential energy?

A.  A glass jar sitting on a shelf. B. A fish swimming through the water.

C.  A ball rolling along a sidewalk. D. A skateboard going down the sidewalk.

____9. A toy robot can walk and talk and runs on batteries. What type of energy is stored in the batteries?

A. nuclear B. kinetic C. chemical D. thermal

___10. Gordon throws a baseball into the air. It rises, stops when it reaches its greatest height, and then falls back to the ground. At what point does kinetic energy convert to potential energy?

A. when the baseball is rising B. when the baseball is falling

C. just after the baseball hits the ground D. while Gordon is holding the ball