Chapter 29-Atm, Climate, and Biomes

Chapter 29-Atm, Climate, and Biomes - Chapter...

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Click to edit Master subtitle style Chapter 29:Atmosphere,Climate, and The surrounding air of the Earth
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Layers of the atmosphere There are 5 layers in the atmosphere They are the troposphere , stratosphere, mesosphere , thermosphere, and exosphere.
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Structure of Atmosphere From Cunningham & Cunningham, 2004, Fig. 9.1
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Troposphere This is the layer that is closest to the surface of the earth It’s elevation ranges from 0 to 10 km (0-6 miles) It contains 90% of the atmosphere’s gases. Weather occurs here
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Stratosphere This layer sits on top of the troposphere It’s elevation ranges from 10 km to around 45 km (6-28 miles) This layer contains the ozone layer , which protects us from harmful UV rays from the sun. Spy planes and jets fly here.
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Mesosphere This layer is above the stratosphere It’s elevation ranges from 45 to 80 km (28-50 miles). The coldest layer, it gets to -100o Celsius (-212o F). After this layer it get warmer until you get into outer space.
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Thermosphere It’s height ranges from 80 to 500 km (50-310 miles) This is where most small meteorites burn up and is also the location in the atmosphere that the northern lights occur (aurora borealis)
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Solar winds strike Oxygen or Nitrogen in the atmosphere and ionize them. This is why you see these colors.
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Exosphere This is located above 550 km. (310 miles) Satellites and the International Space Station orbit in this area.
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Activity 1 Make a picture of the Earth and draw the 5 layers of the atmosphere. Here is what I want you to put in each layer. 1. The altitude range (either in miles or km). 2. Draw something that could be found in each layer or 3. Draw something that would give you a hint about the layer (ex: drawing a picture about something that is really cold or found in cold areas to help you remember the mesophere layer).
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This note was uploaded on 05/27/2011 for the course BIO 112 taught by Professor Kirkpatrick during the Spring '11 term at Moraine Valley Community College.

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Chapter 29-Atm, Climate, and Biomes - Chapter...

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