| A | B |
|---|
| Air Mass | Any body of air with the same temperature and amount of moisture throughout. |
| Air Pressure | The push caused by the weight of the air. |
| Atmosphere | The layers of air that surround the earth. |
| Front | The leading edge of an air mass. |
| Cold Front | The leading edge of a cold air mass. Temperatures will get colder. |
| Warm Front | The leading edge of a warm air mass. Temperatures will get warmer. |
| Stationary Front | A weather front that is not moving; This occurs when a cold front meets a warm front. |
| Humidity | The amount of water vapor in the air. |
| Water Cycle | When water moves between the earth and the air in a pattern. |
| Evaporation | When sun heats water |
| Condensation | As water vapor rises |
| Cloud Formation | These form in the sky when water droplets come together. |
| Precipitation | When the water droplets in clouds get too heavy |
| Runoff- As precipitation falls to the earth | some of it runs into rivers and streams which carry it to the ocean. |
| Ground Water | Some precipitation soaks into the earth and collects underground |
| Transpiration | The release of water from plant leaves. |
| Meteorology | The study of weather. |
