Layers of the Atmosphere

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Last updated 1:00 AM on 3/16/25
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27 Terms

1
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What is the atmosphere's main function during the day?
Protects Earth from harmful solar radiation.
2
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What significant role does the atmosphere play at night?
Traps heat to keep Earth warm.
3
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How many main layers are in Earth's atmosphere?
Five main layers.
4
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What is the troposphere?
The layer of the atmosphere closest to Earth's surface where weather phenomena occurs.
5
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From where to where does the troposphere extend?
From the ground to about 10 to 14 km above sea level.
6
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How much of the atmosphere's mass is found in the troposphere?
About 75%.
7
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What happens to temperature in the troposphere as altitude increases?
Temperature decreases as altitude increases.
8
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What is the stratosphere?
The layer of Earth's atmosphere that lies above the troposphere.
9
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How does the temperature change in the stratosphere with altitude?
Temperature increases with altitude.
10
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What significant layer within the stratosphere absorbs UV radiation?
The ozone layer.
11
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What is the mesosphere?
The layer of Earth's atmosphere above the stratosphere.
12
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What causes meteoroids to burn up in the mesosphere?
Friction caused by gas molecules colliding.
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What phenomenon is commonly observed in the mesosphere?
Meteor showers.
14
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What temperature range does the mesosphere have?
About -2.5 to -90°C.
15
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What is the thermosphere?
The layer of Earth's atmosphere above the mesosphere.
16
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What does the temperature do in the thermosphere as altitude increases?
The temperature greatly increases.
17
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What is the maximum temperature recorded in the upper thermosphere?
Up to 2200°C.
18
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What significant structure orbits in the thermosphere?
The International Space Station (ISS).
19
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What is the ionosphere?
An overlapping ion-rich layer within the thermosphere and mesosphere.
20
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What natural phenomenon is produced in the thermosphere?
The Northern Lights.
21
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What is the exosphere?
The outermost layer of Earth's atmosphere.
22
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What types of atoms primarily compose the exosphere?
Hydrogen and helium atoms.
23
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What is the thickness of the exosphere?
About 10000 km.
24
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How does the temperature in the exosphere compare to other layers?
It can reach up to 1500°C.
25
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Why can’t we breathe in the mesosphere?
The air is too thin.
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What is the boundary called between the mesosphere and thermosphere?
Mesopause.
27
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What is the boundary between the upper thermosphere and the exosphere called?
Thermopause.