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02 03-2012-atmosphere layers1
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02 03-2012-atmosphere layers1

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Transcript

  • 1.
    • Copy today’s date and EQ.
    • List three reasons why the atmosphere is important.
  • 2. Atmosphere Foldable
    • Color the graph line to represent the temperature changes.
      • Blue for decreasing temperatures (getting colder)
      • Red for increasing temperatures (getting warmer)
    • Fold the diagram in half, and cut on the half line.
    • Glue each half on to the front of your shutter foldable.
    • Cut flaps on the left hand side using the horizontal lines.
    • Wait for directions on cutting flaps on the right hand side.
  • 3. Atmosphere
    • The atmosphere protects us from the harmful wavelengths of light.
  • 4. Notice which wavelengths are blocked! Image from https://www.e-education.psu.edu/astro801/files/astro801/image/atmos_windows_KL.jpg
  • 5. Troposphere
    • Where weather occurs
    • Convection currents
    • Most dense layer
  • 6. Stratosphere
    • Contains most of atmosphere’s ozone
    • Where jets fly
  • 7. Mesosphere
    • Where meteors burn up
    • Coldest part of the atmosphere
  • 8. Thermosphere
    • Air molecules can be 1km apart!
    • Up to 2,000 degrees C
    • International Space Station orbits at 300 km
  • 9. Ozone Layer
    • O 3
    • Protects us from most of the sun’s UV radiation
  • 10. Ionosphere
    • Helps bounce radiowaves back to Earth
    • Auroras happen here
  • 11. Exosphere
    • Satellites orbit
    • No definite “end”
  • 12. Magnetosphere
    • Earth’s magnetic field
    • Protects us from the solar wind
    • Without it, our atmosphere would “blow” away. Scientists think that is what happened to Mars.
  • 13. Reflection Questions – Page 123
    • List the four main atmospheric layers.
    • Which layer is the most important to you and why?
    • What does the stratosphere protect you from?
    • What does the mesosphere protect you from?
    • Which layer acts as a giant magnet? What does it attract?
    • What would happen to Earth’s atmosphere if the magnetosphere did not exist?
    • In which layer does weather occur?
    • What do we determine where one atmosphere layer ends and the next one starts?