B1 2021 Zaffarese

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Across
  1. 4. Stormy and windy weather occur in _____ pressure
  2. 5. Makes up 21% of air
  3. 7. Humans to this to coal to create energy
  4. 8. Tool that measures temperature
  5. 11. An air mass that forms over an ocean is a _____ air mass
  6. 14. The area that an air mass originated from
  7. 15. An air mass that forms at low latitudes either on or near the equator
  8. 16. When the air reaches 100% humidity it is considered to be _______
  9. 17. Sunny skies and clear weather occur in _____ pressure
  10. 18. The layer where auroras occur
  11. 20. measures wind direction
  12. 23. The most common gas in the atmosphere
  13. 24. An air mass that is formed at high latitudes
Down
  1. 1. Greenhouse gas produced by humans
  2. 2. Gasses that trap the sun's rays on earth
  3. 3. Tool for measuring air pressure
  4. 6. The most common greenhouse gas
  5. 9. Humans burn this for energy, but it is non-renewable and emits greenhouse gasses
  6. 10. Where we live, and weather occurs
  7. 12. Greenhouse gas commonly produced by
  8. 13. A large body of air containing the same characteristics throughout
  9. 19. Layer where meteorites occur
  10. 21. An air mass that forms over land is a _____ air mass
  11. 22. Transfer of heat through touch