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Weather Instruments

Terms in this set (21)

anemometer
An instrument used to measure wind speed
barometer
measures air pressure
hygrometer
measures humidity
rain guage
An instrument used to measure precipitation.
thermometer
An instrument used to measure temperature
wind vane
measures wind direction
cirrus cloud
Wispy, feathery clouds made of ice crystals that form at high levels.
cumulus cloud
A puffy white cloud with a flat bottom that forms at a low or medium elevation
stratus cloud
Layered clouds that cover much of the sky and are dull gray.
cumulonimbus clouds
are thunderstorm clouds. High winds can flatten the top of the cloud into an anvil-like shape. Cumulonimbus clouds are associated with heavy rain, snow, hail, lightning and even tornadoes. The anvil usually points in the direction the storm is moving.
fog
A cloud at ground level.
condensation
The change from a gas to a liquid
evaporation
The change of a substance from a liquid to a gas
water vapor
water in the form of a gas
precipitation
rain, snow, sleet, or hail that falls to the ground.
front
A boundary between two air masses
air mass
A huge body of air that has similar temperature, humidity, and air pressure at any given height
cold front
A front where cold air moves in under a warm air mass.
warm front
a front where warm air moves over cold air and brings drizzly rain and then are followed by warm and clear weather
sea breeze
The flow of cooler air from over an ocean or lake toward land
land breeze
the flow of air from land to a body of water
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