Chapter 10 Vocabulary

4. the length of one wave cycle
6. air currents caused by the expansion and rising of air as it warms and the movement of cooler air to replace it
8. the joining together of atoms to produce nuclear energy
14. when expanded warm liquid or gas rises above a cooler liquid or gas
15. the energy contained in an elastic material that has been stretched or compressed from its original shape
18. the kinetic energy of sound waves
20. the splitting of atoms to produce nuclear energy
21. the number of cycles of a wave pattern that occur in one second
22. the energy of motion
23. a device that combines hydrogen and oxygen, without combustion, to generate electricity
25. the capacity to do work
27. energy from sources that will eventually be used up and cannot be replaced
28. solar cells that convert the sun's energy directly into electrical energy
29. fuels created from plant or biomass sources

1. the movement of electrons from atom to atom
2. when heat energy passes through a solid
3. materials that obey Hooke's Law, which states that the amount a spring extends is proportional to the force with which you pull it
5. the energy associated with the Earth's gravitational field; the natural force of attraction created by an object that draws other objects toward itself
7. energy from sources that will always be available
9. particles released by unstable nuclei when an atom tries to become stable
10. energy locked away in different kinds of substances; often released by burning
11. energy that is derived from an object's position or condition
12. energy from the heat at Earth's core
13. electricity generated from moving water over turbines connected to electric generators
16. energy that travels in waves from the sun
17. energy that occurs as a material heats up and its atoms become more active
19. energy from plants
24. energy an object has because it is moving
26. energy that occurs when the atoms of certain elements are split or fused together