Climate and weather

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Across
  1. 3. to change from a gas to a liquid
  2. 7. the blanket of air that surround a planet
  3. 9. a disturbance in the atmosphere that causes large amounts of wind
  4. 10. the conditions in the atmosphere at a particular place and time
  5. 15. the measurement of how high above ground something is
  6. 16. a climate that is warm all year
  7. 18. to change from a liquid to a gas
  8. 19. the amount of water vapor in the air
  9. 20. very dry
Down
  1. 1. water in the atmosphere that falls to Earth's surface
  2. 2. very cold and dry
  3. 4. the imaginary line that divides Earth into a northern half and a southern half
  4. 5. an overflow of water that spreads over dry land and causes damage
  5. 6. a large, funnel-shaped mass of swirling wind formed over land
  6. 8. a large storm that forms over an ocean with strong winds and a lot of rain
  7. 11. to change
  8. 12. the average weather patterns of a place over a long period
  9. 13. a long, dry period with little or no rain
  10. 14. the measure of how hot or cold something is
  11. 17. a measure of how far south or north of the equator a place is