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Weather

Wehlander

Vocabulary WordDefinition
Greenhouse effect Describes how heat from the sun is trapped in the atmosphere to warm Earth.
Air pressure Air particles pressing down on a surface.
Humidity Amount of water vapor in the air.
Front Border formed where a cold air mass and a warm air mass meet.
Troposphere Layer of the atmosphere that is closest to Earth.
Barometer Instrument that measures air pressure.
Atmosphere Air that surrounds our planet.
Hygrometer Instrument that measures the amount of water vapor in the air.
Air mass Large body of air that has moisture content and temperature similar to the water or land over which it formed.
Stratosphere Layer of atmosphere just above most weather.
Cumulus Puffy, white clouds at middle altitudes.
Cumulo-nimbus Dark, towering clouds that bring heavy rain.
Stratus Thick,gray rain clouds near Earth's surface.
Cirrus Thin, wispy clouds at high altitudes.
Temperature and moisture What are the two properties that describe an air mass?
Troposphere What is the layer of the atmosphere that most weather occurs in?
Warm Air Mass What type of air mass is forced upward by cooler air and has low pressure?
Cumulo-nimbus What type of cloud usually brings heavy rain?
Increases As you get higher in the atmosphere, the space between the air particles does what?
Sun The greenhouse effect traps energy from the ____________.
Warm and moist An air mass that forms over tropical water would be __________________________
Stationary front What forms when two air masses meet and don't move?
Cold Warm air can have more water vapor than __________ air.
Thermometer What is the instrument that measures air temperature?
Humidity What is the amount of moisture in the air?
Warm What type of air holds the most moisture?
Anemometer What instrument measures wind speed?
Weather Vane What instrument measures wind direction?
Created by: lisbon4thgrade
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