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Holt Science and Technology 47 Energy and Energy Resources

Skills Worksheet

Reinforcement See What I Saw Complete this worksheet after you finish reading the section Energy Conversions. In each of the following diagrams, a boy and a girl of equal mass sit on opposite sides of a seesaw. The arrows indicate direction of movement. Take a few moments to look over the pictures, and then circle the statement that correctly describes the transfer of energy for each picture.

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Original content Copyright by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor.

Holt Science and Technology 48 Energy and Energy Resources

a. The girls potential energy increases as the boys kinetic energy increases.

b. The boys potential energy and the girls potential energy decrease.

c. The girls kinetic energy increases as the boys potential energy increases.

d. The kinetic and potential energies of the boy and the girl are equal.

a. The girls potential energy increases as the boys kinetic energy increases.

b. The boys potential energy and the girls potential energy decrease.

c. The girls kinetic energy increases as the boys potential energy increases.

d. The kinetic and potential energies of the boy and the girl are equal.

a. The girls potential energy increases as the boys kinetic energy increases.

b. The boys potential energy and the girls potential energy decrease.

c. The girls kinetic energy increases as the boys potential energy increases.

d. The kinetic and potential energies of the boy and the girl are equal.

Name ______________________________ Class___________________Date__________________

Original content Copyright by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor.

Holt Science and Technology 49 Energy and Energy Resources

Reinforcement continued

4. Remember that mechanical energy is the sum of kinetic and potential energy. What happens to the amount of mechanical energy in the boy in Picture 3 as his potential and kinetic energies change?

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