The atmosphere
description
Transcript of The atmosphere
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The atmosphere
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The Atmosphere
The earth is surrounded by a blanket of air called the atmosphere.
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The ozone layerThe ozone layer is in the
stratosphere.Ozone is the gas that protects Earth
from the sun’s harmful ultraviolet rays.
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Air pressureAir pressure is the weight of the
atmosphere pressing down on Earth.
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Measuring weatherA Barometer measures the air
pressure.
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Humidity
It is the amount of water in the atmosphere.
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Measuring weatherThe hygrometer measures
humidity.
Humidity is the amount of water in the air.
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weather
Weather is the condition of the atmosphere at a particular time.
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Air and weather
Air mass is a large body of air that has a similar temperature and moisture .
When air masses move, they come into contact with other air masses. The border between one air mass and another is called a front.
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Wind
Wind results from air moving from areas
of high pressure to areas of low pressure.
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Measuring weather Wind is the movement of air.Anemometer measures the speed
of wind.
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Local Winds
A local winds, a wind that results from a local difference in temperature. Local winds often occur on lakeshores or seashores.
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