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Topic 6 Lesson 2
Water in the Atmosphere
| Term | Definition |
|---|---|
| water cycle | The series of events where water moves between the surface of the Earth and the atmosphere. |
| evaporation | When molecules of liquid water in oceans, lakes and other bodies of water are heated by the sun. |
| condensation | When water vapor changes in to liquid water. |
| dew point | The temperature at which condensation begins. |
| humidity | A measure of the amount of water vapor in the air. |
| relative humidity | The percent of water vapor in the air compared to the maximum (most) amount of water vapor the air can hold at a certain temperature. |
| precipitation | ANY form of water that falls from clouds and reaches the Earth's surface. |