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Weather/Water Cycle
Vocabulary Words for this unit
| Question | Answer |
|---|---|
| Weather | The condition of the atmosphere at a particular time and place. |
| Water Cycle | The continuous movement of water from water sources such as lakes and oceans, into the air, onto and over land, into the ground, and back to the water source. |
| Evaporation | When liquid water turns into water vapor (gas). |
| Condensation | When a gas cools and changes to a liquid. |
| Transpiration | The process by which plants release water vapor into the air through their leaves. |
| Precipitation | Water in the solid or liquid form that falls from the air to the Earth. |
| Runoff | Water that flows across land and collects in rivers, streams, and eventually the oceans. |
| Infiltration | Surface water that is absorbed into the ground. |
| Ground Water | Water stored underground. |
| Humidity | The amount of water vapor or moisture in the air. |
| Relative Humidity | As a given temperature. The amount of moisture air contains compared to the maximum it should be able to hold. |
| Dew Point | The temperature to which air must cool to be completely saturated. |
| Cloud | A collection of millions of tiny water droplets or ice crystals. |
| Air Mass | A large body of air that has similar temperature and moisture throughout. |
| Front | The boundary where 2 different air masses meet. |
| Thunderstorms | Small intense weather systems that produce strong winds, heavy rain, lightning, and thunder. |
| Tornado | A small rotating column of air that has high wind speed and low central pressure and that touches the ground. |
| Hurricane | A large rotating tropical weather system with wind speed of at least 119 km/hr. |
| Cirrus | Thin, feathery white clouds formed at high altitudes. |
| Stratus | Clouds that form in layers. |
| Cumulus | Puffy white clouds that tend to have flat bottoms. |
| Climate | The average weather conditions in an area over a long period of time. |
| Latitude | The distance north or south from the equator, measured in degrees. |
| Prevailing wind | Winds that blow mainly from one direction. |