Question

Building Vocabulary As you read, complete the concept map with
vocabulary terms and definitions from this section. For more information on
this Reading Strategy, see the Reading and Study Skills in the Skills and
Reference Handbook at the end of your textbook.
Energy and Work (page 447)
1. What is energy?
2. When work is done on an object, is transferred to
that object. Circle the correct answer.
energy heat height
3. Circle the letter of each sentence that is true about work and energy.
a. Energy in food is converted into muscle movement.
b. Both work and energy are usually measured in joules.
c. One joule equals one meter per newton.
Kinetic Energy (pages 447–448)
4. The energy of motion is called .
5. Is the following sentence true or false? You can determine the kinetic
energy of an object if you know its mass and its volume.
Physical Science Reading and Study Workbook Level B ■ Chapter 15 173
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which
can
be
elastic potential
energy
which
is
potential energy
Energy can
be

Answer 1

Energy and Work
1. Energy is the ability to do work or cause change.

2. When work is done on an object, energy is transferred to that object.

3. True sentences: a and b.
- a. True — chemical energy from food is converted to mechanical energy for muscle movement.
- b. True — both work and energy are measured in joules (J).
- c. False — 1 joule = 1 newton·meter (N·m), not 1 meter per newton.

Kinetic Energy
4. The energy of motion is called kinetic energy.

5. False. Kinetic energy depends on an object’s mass and its speed (KE = 1/2 · m · v^2), not its volume.