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Weather the Weather
5th Grade Science
Term | Definition |
---|---|
atmosphere | the gas that surrounds the Earth (and other planets and stars) |
barometer | a weather instrument that measures air pressure |
condensation | the process of changing from a gas to a liquid |
dew point | the temperature at which the water vapor in the air condenses (dew forms) |
evaporation | the process of changing from a liquid to a gas |
freezing rain | rain that falls as liquid but turns to ice on contact with a freezing object or surface to form a smooth ice |
hail | precipitation, consisting of large balls of ice, which forms in layers caused when raindrops are forced up and down through colder then warmer air layers found in thunder storms |
humidity | water vapor in the air |
hurricane | a severe tropical storm with torrential rain and winds above 74 miles per hour (119 kilometers per hour) |
meteorology | the science of studying the Earth’s atmosphere and weather |
precipitation | water that falls to the Earth’s surface as rain, snow, sleet, or hail |
psychrometer | an instrument used to measure humidity |
sleet | forms as falling rain from a warm layer of air, then passes through a freezing air layer near the Earth’s surface, forming hard, clear, tiny ice pellets |
tornado | an extremely destructive, funnel-shaped rotating column of air that passes in a narrow path over land |