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Weather
Vocabulary to assist with weather unit
| Term | Definition |
|---|---|
| meteorologist | a person who studies weather |
| weather | the daily condition of the atmosphere |
| precipitation | cloud droplets that grow and soon fall as rain, snow, sleet, hail |
| rain | liquid precipitation |
| sleet | precipitation that starts as snow, melts slightly and then refreezes as it falls/ It looks like little ice pellets. It freezes on the way down |
| snow | precipitation in which ice crystallizes into snowflakes that stay frozen on the way to the ground |
| hail | precipitation that begins as ice (ice pellets). When the ice becomes too heavy, it falls in the form of hailstones (can be as big as a softball) |
| temperature | hot, cold, cool, or warm |
| cloud | a mass of tiny water droplets that are too small to fall from the sky |
| air mass | large areas of air with nearly the same temperature and moisture |
| air pressure | the force with which air presses against surfaces |
| high pressure | heavy air pockets, air is moving downward, good weather and clear skies |
| low pressure | light air pockets, air is moving upward, creates bad weather |
| front | large pockets of air (warm or cold) that smash into each other |
| warm front | air that has moved across warm land or warm water. The warm air smashes into cold air. It brings long steady rain and warmer temperatures |
| cold front | light air pockets, air is moving upward, creates bad weather |
| barometer | an instrument used to measure air pressure |
| anemometer | an instrument used to measure wind speed |
| wind vane | (weather vane) a device that shows the direction of wind |
| rain gauge | an instrument used to measure amounts of precipitation (rainfall) |
| thermometer | an instrument used to measure temperature of the air (hot /cold) |
| thunderstorm | produced by heating of the earth surface producing large amounts of quickly rising water vapor. There is usually thunder, lightning, rainfall, and sometimes wind |
| hurricane | formed when a group of thunderstorms gather in a circular pattern. It forms over tropical waters. When winds reach 75 mph, the event is classified as a hurricane. Usually high winds and lots of rain. Can cause lots of destruction |
| tornado | Small and very violent twisting storm/ created by thunderstorms, rapid spinning columns of air (funnel clouds) with high winds that starts over land. Can cause destruction. |
Created by:
sewatzie
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