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4th Grade Unit 7
Definition | Term |
---|---|
air that surrounds the Earth; made of a mixture of gases | Atmosphere |
the process of changing from a gas to a liquid | Condensation |
the process of changing from a liquid to a gas | Evaporation |
water that falls to the Earth’s surface as rain, snow, sleet, or hail | Precipitation |
a tool for collecting and measuring the amount of precipitation that falls | Rain Gauge |
increasing water levels in ponds, lakes, streams and rivers, glaciers, snowpack, or water run-off | Accumulation |
how fast and in what direction the air is moving | Wind Conditions |
a weather instrument used to show the direction of the wind; often ornamental | Wind Vane |