| A | B |
| atmosphere | Thin layer of air that provides a protective covering around the Earth. |
| chlorofluorocarbon | Chemical compounds used in refrigerators, etc. that destroy ozone |
| ionosohere | Layer of electrically charged particles (ions) located in the thermosphere |
| ozone layer | Located in the stratosphere, it protects you from the ultraviolet rays of the sun. |
| troposphere | This is the layer of the atmosphere where weather (rain, sleet, snow, etc.) takes place. Lowest layer of the atmosphere. |
| stratosphere | Layer of the atmosphere above the troposphere. The ozone layer is located here. |
| ultraviolet radiation | Type of energy that comes from the sun. Overexposure can harm skin. |
| mesosphere | A layer of the atmosphere where you meteor showers take place. |
| thermosphere | Layer of the atmosphere with very high temperatures. |
| exosphere | The layer of the atmosphere where the space shuttle orbits |