Geography crossword

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Across
  1. 2. when the Sun's rays strike vertically either Tropic
  2. 5. the total amount of solar radiation received at the Earth's surface
  3. 6. this gas is responsible for the Greenhouse effect
  4. 8. the atmospheric layer where most of the ozone is concentrated
  5. 11. the coldest atmospheric layer
  6. 12. beautiful optical phenomenA formed in the Thermosphere
  7. 13. the reverse of the normal vertical distribution of air temperature
  8. 14. liquid, solid or gaseous variable components of air
Down
  1. 1. lines of longitude
  2. 3. tropospheric air is heated by ....... radiation
  3. 4. the predominant gas in the atmosphere
  4. 7. march 21st and september 23rd are....
  5. 9. force that deflects all moving objects off their direction
  6. 10. the gradual change of the natural components with altitude and latitude