Introduction to Energy

The energy of moving objects is called

• motion energy

• potential energy

• kinetic energy

• gravitational energy

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Which of the following objects has potential energy?

• a ball that is thrown into the air

• a bungee cord that is stretched

• a spring that is compressed

• all of the above

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The gravitational potential energy of an object depends on its height above Earth and its

• air resistance.

• elasticity.

• velocity.

• weight (mass x gravity).

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Which energy conversion occurs in a battery?

• electrical energy → chemical energy

• electromagnetic energy → light energy

• chemical energy → light energy

• chemical energy → electrical energy.

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An object with greater velocity always has more kinetic energy than an object with lesser velocity.

• True

• False

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Burning changes chemical energy to thermal and light energy.

• True

• False

If the speed of an object is doubled, its kinetic energy will be

• Halved

• Quartered

• Doubled

• Quadrupled

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A car, a train, a bicycle, and a skateboard are traveling at the same speed. Which object has the greatest kinetic energy?

• Car

• Train

• Bicycle

• Skateboard

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When you stretch a rubber band, you give it

• Kinetic energy

• Elastic potential energy

• Electrical energy

• Gravitational potential energy

What energy transformation takes place when wood is burned?

• Nuclear energy to thermal energy

• Thermal energy to electrical energy

• Chemical energy to thermal energy

• Mechanical energy to thermal energy