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weather
| Term | Definition |
|---|---|
| water cycle | The process by which water circulates between the atmosphere and Earth's surface |
| condensation | molecules of water vapor in the air became liquid water to form clouds |
| evaporation | water molecules in liquid water escape into the air as water vapor |
| transpiration | evaporation of water from trees |
| precipitation | Any water that falls from the sky. |
| barometer | an instrument measuring atmospheric pressure, used especially in forecasting the weather and determining altitude. |
| thermometer | an instrument for measuring and indicating temperature. |
| isobars | measure air pressure. |
| Air pressure | the force of a column of air pushing down on an area |
| altitude | the distance above sea level |
| atmosphere | layer of gases that surrounds the planet; traps heat in which allows life to exist on earth |
| Wind | Horizontal movement of air from high pressure to low pressure. |
| Anemometer | measures wind speed. |