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4th 8 Water Cycle
4th Unit 8 Water Cycle and Weather
Term | Definition |
---|---|
water cycle | The movement of water between Earth's surface and the atmosphere. |
evaporation | The change from a liquid to a gas. |
atmosphere | The mixture of gases that surrounds Earth |
condensation | The change of a gas into a liquid. |
precipitation | Water that falls from clouds to Earth's surface as rain, snow, sleet, or hail. |
runoff | Water that is not absorbed into the ground and runs over the surface of Earth. |
groundwater | Water that is stored underground. |
weather | The condition of the atmosphere at a given place and time. |
humidity | The amount of water vapor in the air. |
air pressure | The weight of the atmosphere pressing down on Earth's surface. |
air mass | A large body of air with the same temperature of humidity throughout. |
front | The boundary between two air masses. |
aquifer | A body of rock that stores groundwater. |
glacier | A huge mass of frozen water that moves slowly over land. |
iceberg | A large floating mass of ice that has detached from a glacier and is carried out to sea. |
barometer | An instrument used to measure air pressure. |
sea breeze | Air moving in from the sea towards the land. |
land breeze | Air moving out from the land toward the sea. |
anemometer | An instrument used to measure wind speed. |
wind vane | An instrument used to measure wind direction. |
rain gauge | An instrument used to measure the amount of precipitation. |