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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 |