Page 68 - Science Course 2 (Book 2)

Mo9-L3: Vocabulary Review

Direction: On the line before each clue, write the letter of the term that matches it correctly.
Then respond to the statement that follows.

1. a type of kinetic energy that powers a cell phone A. kinetic energy
B. sound energy
2. a basketball held over your head has this
C. thermal energy
3. space that contains no matter
D. seismic energy
4. anything in motion has this E. mechanical energy
F. electric energy
5. stored in the bonds between atoms
G. chemical energy
6. important to bats as they search for prey
H. nuclear energy
7. stored in and released from the nucleus of an atom I. potential energy
J. radiant energy
8. potential energy + kinetic energy in a system of objects
K. vacuum
9. potential energy + kinetic energy of the particles
that make up an object L. energy

10. released when earthquakes occur; transferred by waves
moving through the ground

11. carried by electromagnetic waves

12. causes change

Mo9-L3: Key Concept Organizer

Direction: Circle the term in parentheses that correctly completes each sentence.

1. (Mechanical/Chemical) energy is the energy an object has because of the movement of its parts and
because of the position of its parts.

2. An object has mechanical energy because the parts that make up the system (have/do not have) potential
energy (and/or) kinetic energy.

3. A rotating blade has kinetic energy because of its (mass/motion), and it has gravitational potential energy
because of its distance from Earth’s (orbit/surface).

4. (Thermal/Electric) energy is the sum of the kinetic energy and potential energy of the particles that makes
up an object.

5. The particles in Earth’s interior (emit/contain) a lot of thermal energy.

6. In geothermal energy plants, thermal energy is harnessed to (freeze/heat) water and turn it to (ice/steam).

7. Geothermal energy produces (almost no/large amounts of) pollution.

8. Geothermal plants must be built in places where molten rock is (far from/close to) Earth’s surface

9. The states with the most geothermal plants are Alaska, Hawaii, and (New York/California).

10. Sound waves are waves that move through (air/matter).
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