صفحه 1:
صفحه 2:
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مرو 2 - Stratosphere
صفحه 3:
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صفحه 4:
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صفحه 5:
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صفحه 6:
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صفحه 7:
صفحه 8:
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Atmosphere
The surrounding air of the Earth
Layers of the atmosphere
• There are 4 layers in
the atmosphere
• They are the
troposphere,
mesosphere,
thermosphere, and
stratosphere
Troposphere
• This is the layer that is
closest to the surface of
the earth
• It’s elevation ranges
from 0 to 10 km
Stratosphere
• This layer sits on top of
the troposphere
• It’s elevation ranges
from 10 km to around
25 km
• This layer contains the
ozone layer, which
protects us from
harmful sunlight
Mesosphere
• This layer is above the
stratosphere
• It’s elevation ranges
from 25 to 100 km
Thermosphere
• This is the highest layer of
the atmosphere
• It’s height ranges from 100
to 400 km
• This is where most small
meteorites burn up and is also
the location in the atmosphere
that the northern lights occur
(aurora borealis)
Composition of Air
• There are many
different types of gasses
in the atmosphere
• They include nitrogen,
oxygen, argon, carbon
dioxide and other noble
gasses
• The gas that is most
abundant is nitrogen
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