Energy

3. A measure of energy that is used for measuring the amount of energy in food.
6. The form in which sound energy moves from one place to another.
8. Heated air that is lighter than the surrounding air.
10. The movement of thermal energy through liquids and gases.
12. The peak of a sound wave where the greatest air pressure occurs.
13. A form of energy that results from the attraction of objects that are made of iron.
15. Energy stored in a hot object.
17. A form of energy that travels as waves from the sun to Earth.
18. The basic unit of energy that scientists use.
19. Energy stored in a squashed spring.

1. The pitch of a sound depends ? of the sound wave.
2. Energy stored in a fuel.
4. The loudness of a sound depends on the ? of the sound wave.
5. The ability to cause a change in matter.
7. Energy of a moving object.
9. A type of material that tries to prevent the flow of thermal energy.
11. A form of energy that results from the attraction between 2 objects.
14. A measure of the highness or lowness of a sound.
16. Energy stored in the nucleus of an atom.
19. A form of energy that travels as waves through the air and some solids and liquids.