Earth's Atmosphere

6. the amount of mass in a given volume of a substance
7. pollution harmful materials that are added to the air
8. energy that moves across distances in the form of certain types of waves
9. effect the process that keeps energy in Earth's system for a while by gases absorbing and emitting infrared radiation.
11. processes that repeat over and over
12. gases the gases that absorb and give off infrared radiation
14. a molecule made of three atoms of the element oxygen
16. the combination of smoke and fog

1. the whole layer of air that surrounds Earth and supports life.
2. radiation waves that have more energy than the light you can see
3. distance above sea level
4. tiny particles or droplets that are mixed in with air
5. radiation waves that have less energy than visible light
10. the transfer of energy from place to place by the motion of gas or liquid
13. the transfer of heat energy from one substance to another by direct contact
15. fuel formed from the remains of prehistoric animals and plants and used by cars, power plants, and factories