| __ | 1. | atmosphere | | A. | mixture of gases that surround the earth |
| __ | 2. | electromagnetic spectrum | | B. | Earth's surface to a height of 8-15km |
| __ | 3. | global warming | | C. | felt as heat |
| __ | 4. | greenhouse gases | | D. | range of wavelengths or frequencies |
| __ | 5. | infrared waves | | E. | 15km to 50km above Earth's surface |
| __ | 6. | inversion | | F. | a portion of Earth's outgoing gases |
| __ | 7. | stratosphere | | G. | increase in Earth's average surface temperature |
| __ | 8. | troposphere | | H. | causing skin to tan or sunburn |
| __ | 9. | ultraviolet waves | | I. | when something is turned upside down |
| __ | 10. | wind | | J. | air that is in motion relative to Earth's surface |