Air

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Across
  1. 2. Green plants produce -- during photosynthesis
  2. 4. Jet planes flying in the sky leave a -- trail behind them
  3. 5. the second most plentiful gas in the air
  4. 11. Insolation influences the distribution of
  5. 13. Our earth is surrounded by a huge blanket of
  6. 14. gas protects us from harmful sun’s rays
  7. 15. Excess amount of CO2 is responsible for -- warming
  8. 16. Green plants use Carbon dioxide to make their food and release --
  9. 18. The air pressure is highest at -- level
  10. 19. Rain, snow sleet or hail are the different forms of
  11. 21. When the air is heated it becomes
  12. 23. The degree of hotness and coldness of the air is known as
  13. 24. As we go up in troposphere layer of the atmosphere the pressure
  14. 25. Ionosphere is the part of
  15. 26. instrument to measure air pressure
  16. 27. -- air is denser and heavy than hot air
Down
  1. 1. Amount of rainfall is measured by
  2. 3. plentiful gas in the air
  3. 6. layer is almost free from clouds
  4. 7. is this hour-to-hour, day to day condition of the atmosphere
  5. 8. a type of rainfall
  6. 9. very hot wind called
  7. 10. The standard unit of measuring temperature is
  8. 12. Meteorites burn up in this layer on entering from the space
  9. 15. Carbon dioxide released in the atmosphere creates a -- house effect
  10. 17. Earth is surrounded by a blanket of air called
  11. 20. Green House gas is
  12. 22. The -- winds blow constantly throughout the year in a particular direction