ES 5.1.1 & 5.1.2

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Across
  1. 3. Atmospheric pressure is greater at lower ________ because the gases are most highly concentrated at sea level.
  2. 4. The upper part of the mesosphere where temperature begins to increase.
  3. 5. The solid particles in the atmosphere.
  4. 7. The layer of the atmosphere closest to the earth. All life exists here.
  5. 9. This layer reaches more than 227 degrees C at night and rises to 1700 degrees C during the day.
  6. 14. White crystals across the sky.
  7. 17. A mixture of gases that surrounds the earth and is held in place by gravity.
  8. 19. The outermost region of the heterosphere. This is the hottest layer of the atmosphere.
  9. 20. The layer of the atmosphere above the troposphere. It has very little vertical air movement.
  10. 21. These are located in the exosphere. They allow communication through television and other means.
  11. 23. If the atmosphere had too much of this gas, fires would burn more quickly and animal metabolisms would run too fast.
  12. 24. The lower region of the thermosphere, air is extremely thin and ultraviolet radiation from the sun bombards molecules here.
Down
  1. 1. The pressure exerted by the weight of Earth's atmosphere at any given point on Earth.
  2. 2. The upper level of the atmosphere. Here, gases are not mixed, but separated.
  3. 6. The name for the ionized particles that collide to make beautiful lights in the northern hemisphere.
  4. 8. The small organisms that float in the atmosphere.
  5. 10. The lower part of the atmosphere. It extends from the surface of the earth upward about 80km.
  6. 11. The name for the ionized particles that collide to make beautiful lights in the southern hemisphere.
  7. 12. The top layer of the stratosphere where temperatures reach -15 degrees C.
  8. 13. The boundary between the turbulent troposphere and the next layer.
  9. 15. Most atmospheric gas is this.
  10. 16. All _________ occurs in the troposphere such as hurricanes, tornadoes, rainstorms, and blizzards.
  11. 18. The layer above the stratosphere. There are very few oxygen molecules here.
  12. 22. Electrically charged atoms that have gained or lost on or more electron.