Weather and climate

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Across
  1. 2. what is the name for the zone of the earth's atmosphere where most meteoroids burn up upon entering the atmosphere?
  2. 4. which climate has dry summers?
  3. 6. what is the term for the process by which solar radiation is absorbed and then re-emitted as heat by the earth's surface and atmosphere?
  4. 7. how many types of clouds are there?
  5. 8. what is the term for the boundary between two air masses of different temperatures?
  6. 10. what is the name for the boundary between the troposphere and the stratosphere?
  7. 12. what is the term for the measure of the amount of radiation from the sun that reaches the earth's surface?
  8. 14. which climate has very cold winter's but also short cold summers?
  9. 16. what is the term for the process by which the earth's magnetic field deflects charged particles from the solar wind?
  10. 18. what is the name for the process by which ice changes directly into water vapor without melting?
  11. 20. what is hail made out of?
Down
  1. 1. what is the name given to the process by which water moves from the surface of the earth into the atmosphere?
  2. 3. what is the term for the amount of water vapor that the atmosphere can hold at a given temperature and pressure?
  3. 5. what is the term for the average weather condition in a region over a long leriod of time?
  4. 9. which climate is very dry and had very little rain?
  5. 11. what is the term for the vertical movement of air caused by temperature differences in the atmosphere?
  6. 13. what is the term for the cooling of air as it rises and expands?
  7. 15. what is the scientific study of climate called?
  8. 17. what is the term for the measure of the amount of water vapor in the atmosphere?
  9. 19. what is the term for the process by which the earth's atmosphere traps solar radiation and reflects is back to the earth's surface?