Our Atmosphere

1
Our Atmosphere

• Our atmosphere helps us in two very important
  ways.
• It acts as a blanket by holding in the amount of
  heat needed to keep earth livable.
• It affects the amount of solar energy that
  reaches earth protects it from the suns
  harmful radiation.

2
Our Atmosphere

• The four gases that make up our atmosphere
  include . . .
• Nitrogen
• Oxygen
• Carbon dioxide
• Water vapor
• Trace amounts of other gases

3
Our Atmosphere

• The gases that we consider to be greenhouse
  gases are . . .
• Water vapor
• Carbon dioxide

4
GRAVITY!!!

• The force that keeps earths atmosphere where
  its supposed to be!

5
The Layers of Our Atmosphere

• The Troposphere
• The place where most of earths weather happens.
• Most of the water vapor is located in the
  troposphere.
• The higher you go, the colder the temperature in
  this layer.

6
The Layers of Our Atmosphere

• The Stratosphere
• The second layer of our atmosphere.
• The stratosphere protects earth from the suns
  harmful radiation.
• Temperature is fairly constant here.
• The ozone layer is found in the stratosphere.

7
The Layers of Our Atmosphere

• The Mesosphere
• The middle or third layer of our atmosphere.

8
The Layers of Our Atmosphere

• The Exosphere Thermosphere
• These are the layers where satellites and other
  spacecraft can travel.
• In the Exosphere earths atmosphere fades into
  the vacuum of outer space.