Name:    Practice Test - Energy

Multiple Choice
Identify the choice that best completes the statement or answers the question.

1.

The energy associated with motion is called
 a. kinetic energy. b. elastic potential energy. c. gravitational potential energy. d. nuclear energy.

2.

Which of the following has kinetic energy?
 a. a rock poised for a fall b. an archer’s bow that is drawn back c. a rolling bowling ball d. a car waiting at a red light

3.

Unlike kinetic energy, potential energy is
 a. energy of motion. b. stored. c. conserved. d. not measurable.

4.

Potential energy that depends on height is called
 a. kinetic energy. b. gravitational potential energy. c. elastic potential energy. d. mechanical energy.

5.

When you rub your hands together on a cold day, you use friction to convert
 a. mechanical energy into thermal energy. b. thermal energy into nuclear energy. c. nuclear energy into electrical energy. d. electrical energy into electromagnetic energy.

6.

Kinetic energy depends on
 a. mass and volume. c. weight and height. b. speed and weight. d. speed and mass.

7.

Gravitational potential energy depends on
 a. mass and speed. c. mass and weight. b. weight and height. d. height and distance.

8.

Which of the following is a conversion from chemical energy to thermal [heat] energy?
 a. Food is digested and used to regulate body temperature. b. Charcoal is burned in a barbecue pit. c. Coal is burned to boil water. d. all of the above

9.

In every energy conversion, some energy is always converted into
 a. kinetic energy. c. thermal energy. b. potential energy. d. mechanical energy.

10.

An object that has kinetic energy must be
 a. at rest. c. in motion. b. lifted above the Earth's surface. d. None of the above

11.

An object’s mechanical energy is
 a. its energy of motion. b. not related to the object’s mass. c. the waste energy it produces by friction. d. the sum of its potential and kinetic energies.

12.

Suppose you are jumping on a trampoline. At the top of your jump, your
 a. mechanical energy is zero. c. kinetic and potential energy are equal. b. potential energy is at a maximum. d. potential energy is zero.

13.

Which of the following vehicles has the MOST kinetic energy?
 a. large truck traveling 30 m/s c. small car traveling 30 m/s b. large truck traveling 25 m/s d. small car traveling 25 m/s

14.

Because work and energy are so closely related, they are both expressed in
 a. calories. c. Calories. b. kilocalories. d. Joules.

15.

____ is stored in a stretched rubber band.
 a. Kinetic energy c. Light energy b. Potential energy d. Chemical energy

16.

Mechanical energy can be
 a. all potential energy. c. part potential and part kinetic energy. b. all kinetic energy. d. All of the above

17.

At what point does a roller coaster have the greatest potential energy?
 a. the top of the biggest hill c. the top of the smallest hill b. the bottom of the biggest hill d. the bottom of the smallest hill

18.

At what point does a roller coaster have the greatest kinetic energy?
 a. the top of the biggest hill c. the top of the smallest hill b. the bottom of the biggest hill d. the bottom of the smallest hill

19.

As a pendulum swings downward, its
 a. potential energy is maximum. b. potential energy is converted into kinetic energy. c. kinetic energy is maximum. d. kinetic energy is converted into potential energy.

20.

The chemical energy of the food we eat is a result of a conversion of
 a. thermal energy to light energy. c. potential energy to nuclear energy. b. light energy to chemical energy. d. potential energy to sound energy.

21.

When rolling downhill, a roller coaster's potential energy is converted into
 a. kinetic energy. c. sound energy. b. thermal energy. d. All of the above

22.

A comparison of the electrical energy going into a light bulb with the light energy coming out of it is a measure of its
 a. friction. c. energy efficiency. b. energy resource. d. perpetual motion.

23.

When you turn on a light bulb, you convert
 a. potential energy into electrical energy and light energy. b. electrical energy into kinetic energy and light energy. c. electrical energy into light energy and thermal energy. d. chemical energy into light energy and thermal energy.

24.

If you were to climb 3 m up a tree and then pause on a branch to enjoy the view, you would have
 a. kinetic energy c. light energy b. potential energy d. chemical energy