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Investigating Weather
weather information
21
Science
4th Grade
12/05/2007

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Cards

Term
Atmosphere
Definition
The protective layer above the Earth.
Term
Air mass
Definition
Very large regions of air with the same weather.
Term
Cold Front
Definition
When cold air pushes into an area of warm air.
Term
Humidity
Definition
Measurement of how much water vapor is in the air.
Term
Nitrogen
Definition
Gas that makes up 78% of the atmosphere.
Term
Troposphere
Definition
Layer of the atmosphere where all life happens.
Term
air pressure
Definition
The force of air pushing on an area.
Term
Wind
Definition
Caused by the uneven heating of the Earth.
Term
Anemometer
Definition
Used to measure wind speed.
Term
Oxygen
Definition
Without this most animals would die quickly.
Term
Warm front
Definition
When warm air pushes into an area of cold air.
Term
Layers of the atmosphere in order from the ground up.
Definition
Troposphere, stratosphere, mesosphere, thermosphere.
Term
Thermosphere
Definition
Thickest layer of the atmosphere.
Term
Wind movesĀ  from....
Definition
areas of high pressure to areas of low pressure.
Term
Cold air masses
Definition
Are called the Bully of the air mass world.
Term
Barometer
Definition
Measures air pressure.
Term
Thermometer
Definition
measures air temperature
Term
Hygrometer
Definition
measures humidity
Term
Rain gauge
Definition
Measures the amount of rainfall.
Term
Anemometer
Definition
Measures Wind speed.
Term
Weather vane
Definition
Measures direction of the wind.
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