layers of the w&c chapter 1.4 pages 31-36 w&c chapter 1.4 pages 31-36 atmosphere at 1 1.4ppt
TRANSCRIPT
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Layers of theLayers of theW&C Chapter 1.4
Pages 31-36W&C Chapter 1.4
Pages 31-36
AtmosphereAtmosphere
At1
1.4ppt
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The four mainlayers of theAtmosphereare classifiedaccording tochanges in:
Additional Info
How are the layers classified?
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A. Troposphere
Tropo = changing conditions1. We live in this layer
2. Where weather occurs
3. Thinnest Layer (10km), contains most of the mass of the atmosphere
4. Clouds form in this layer.
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Strato = layered, spread out• Has the Ozone Layer (O3)• Absorbs UV radiation,
heating up this layer and making it warmer higher up.
B. Stratosphere
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The Stratoposhere…
A
•Is where weather occurs
B
•Absorbs UV radiation
C
•Is where we live
D
•Burns up meteors
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Meso = Middle• Coldest layer at -90˚C• Burns up Meteoroids
you see as a shooting star.
C. Mesosphere
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Thermo = Heat
• Molecules are spread very far apart
• No Outer Limit• N2 & O2 molecules
absorb heat, raising their temperature to 1,800°C– You would still feel cold
here. Why?
D. Thermosphere (Divided into 2 layers)
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Ions = charged particles
• Causes the Aurora Borealis (Northern Lights)
• Bounce radio communications off this layer.
D1. Ionosphere
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Exo = “outer”• Outermost layer of
the thermosphere• Satellites orbit here.
D2. Exosphere
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The layer where weather occurs is the…
A
•Troposphere
B
•Mesosphere
C
•Thermosphere
D
•Exosphere
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The layer where satellites orbit is the…
A
•Ionosphere
B
•Mesosphere
C
•Thermosphere
D
•Exosphere
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Exit Pass
• List 3 of the layers of Earth’s atmosphere.• Describe why 2 of them are
important.
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What to Work On• Read Section 1.4 (pages 31-36)• Answer the Section Review questions (#’s 1-4)
on page 36
DUE: Wednesday, May 16th