The ATMOSPHERE by scw8ii1

VIEWS: 5 PAGES: 13

									    The
ATMOSPHERE
 Compare and contrast weather
         and climate
• Weather      • Climate
    Composition of atmosphere
• Nitrogen 78%
• Oxygen 21%
• Carbon dioxide 0.04% to 4%
• Water vapor (variable amounts): is the source of all
  clouds and precipitation.
• Ozone: Located in a layer between 10 and 50 kilometers
  above Earth’s surface. Ozone absorbs potential harmful
  UV radiation from the Sun.
• Air pollutants: salt, dust
    Height and structure of the
           atmosphere
• The atmosphere thins as you travel away
  from the Earth.
• The higher the altitude the lower the air
  pressure. Air pressure is highest at sea
  level.
• Diagram of altitude versus air pressure
LAYERS of the ATMOSPHERE
• The atmosphere is divided into 4 layers
  based on temperature variation;
• Troposphere
• Stratosphere
• Mesosphere
• Thermosphere
Diagram of atmosphere layers
• Draw graph of layers of atmosphere
• In which layer does weather occur?
• In which layer is ozone concentrated?
            Troposphere

• Temperature decreases with an increase
  in altitude.
• Weather occurs in this layer.
           Stratosphere

• Ozone is in this layer
• Temperature increases as height
  increases because ozone is absorbing
  ultraviolet radiation from the Sun.
• Exposure to UV causes:- cancer, genetic
  mutation and sunburn
            Mesosphere

• Does not absorb solar radiation,
  temperature decrease with increase in
  altitude.
          Thermosphere

• Temperature increase because oxygen
  and nitrogen absorb short-wave high-
  energy solar radiation
Answer these questions
1. List the four main layers.
2. List the four minor layers.
3. Which two minor layers are parts of a main layer?
4. Which layer is the most important to you and why?
5. What two layers protect you?
6. Which layer acts like a giant magnet? What does it
   attract?
7. What does the air in the atmosphere do as it heats up
   from the Sun?
8. What cloud indicates the top of the troposphere?

								
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