Weather

2. The amount of space an object takes up
3. Force of the air above a surface pushing down on it due to gravity.
7. When a solid becomes a liquid
8. how much stuff or particles make up an object
9. A measure of the average energy of motion of the particles of a substance.
10. hot air rising and cool air sinking
12. Temperature scale the U.S. uses
15. continuous movement of water from ground to sky
17. weather conditions in a particular area for a long period of time
18. Form of heat transfer where heat energy is transferred when particles collide
19. Mass A large body of air with the same temperature and humidity throughout. The area over which it forms is what provides its characteristics.
20. A zone where two different air masses meet that brings a change in weather. Kinds include cold front, warm front, stationary front, occluded
21. The amount of water vapor in the air
23. Happens at 32 degrees F. The temperature at which a liquid changes into a solid

1. Liquid to gas
4. another word for light; type of heat transfer by electromagnetic waves
5. caused by unequal heating of earth's surface which causes differences in air temperature
6. water in the form of a gas
11. Gas to liquid
13. rain, snow, sleet, or hail that falls to the ground.
14. solid,liquid,gas describe the ________ of matter
16. How tightly packed the matter in a substance is.
22. Temperature scale Europe & the rest of the world uses
24. invisible force that results in precipitation falling towards the ground; makes things fall