| A | B |
|---|
| weather | the condition of the atmosphere at a particular time and place |
| water cycle | the continuous movement of water from water sources into the air, onto land, into and over ground, and back to the water sources |
| evaporation | the change of state from a liquid to a vapor |
| transpiration | the process by which plants release water vapor into the air through their leaves |
| condensation | the change of state from a gas to a liquid |
| precipitation | solid or liquid water that falls from the air to the Earth |
| runoff | water, usually from precipitation, that flows across land and collects in rivers, streams, and eventually the ocean |
| humidity | the amount of water vapor or moisture in the air |
| increases | As water evaporates, the humidity of the air _________. |
| decreases | As temperature decreases, the air’s ability to hold moisture _________. |
| more | Warmer air can hold _______ water vapor than cooler air. |
| relative humidity | the amount of moisture the air contains compared with the maximum amount it can hold at a particular temperature |
| anemometer | instrument used to measure wind speed |
| psychrometer | an instrument used to measure relative humidity |
| saturated | When air holds all the water it can hold at a given temperature, it is said to be ________. |
| 100% | Saturated air has a relative humidity of ______. |
| rises | If the amount of water vapor in the air stays the same, the relative humidity decreases as the temperature ____. |
| dew point | the temperature to which air must cool to be completely saturated |
