02 03-2012-atmosphere layers1

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02 03-2012-atmosphere layers1

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

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