Cumulative Crossword 3H

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Across
  1. 5. can be reversed; not a new substance
  2. 8. long term weather; average weather
  3. 10. ecosystem located by equator
  4. 13. mass is same before and after a change
  5. 14. thunderstorm cloud
  6. 17. instrument that measures wind direction
  7. 20. examples are all plants and animals
Down
  1. 1. examples are hot water/air rises; cool sinks
  2. 2. instrument that measures air pressure
  3. 3. distance divided by time
  4. 4. rubbing force in opposite direction
  5. 6. instrument that measures wind speed
  6. 7. newton's first law of motion
  7. 9. person who studies the weather
  8. 11. rays and waves cause heat transfer
  9. 12. downward force toward the center of the earth
  10. 14. can't be reversed; creates new substance
  11. 15. examples are bacteria, amoeba, paramecium
  12. 16. day to day weather
  13. 18. direction all heat transfers
  14. 19. lakes, rivers, streams, oceans
  15. 21. fair weather wispy clouds; made of ice crystals