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Holt Science and Technology 29 Energy and Energy Resources

Skills Worksheet

Vocabulary and Section Summary

What Is Energy? VOCABULARY In your own words, write a definition of the following terms in the space provided. 1. energy

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_______________________________________________________________ 2. kinetic energy

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_______________________________________________________________ 4. mechanical energy

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SECTION SUMMARY Read the following section summary.

Energy is the ability to do work, and work equals the transfer of energy. Energy and work are expressed in units of joules (J).

Kinetic energy is energy of motion and depends on speed and mass.

Potential energy is energy of position. Gravitational potential energy depends on weight and height.

Mechanical energy is the sum of kinetic energy and potential energy.

Thermal energy and sound energy can be considered forms of kinetic energy.

Chemical energy, electrical energy, and nuclear energy can be considered forms of potential energy.