weather forecast

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Across
  1. 3. study weather over long time span
  2. 5. cold mass meets a warm mass but won't move
  3. 8. moved by prevailing jet streams
  4. 9. brings clouds and precipitation
  5. 10. strong winds, freezing temperature, snow
  6. 11. move slowly and bring warm, humid air
  7. 13. violent disturbance
  8. 15. temperature, humidity and pressure
  9. 16. there are _____ types of fronts
  10. 19. cold air moves under warm air forcing warm air up
  11. 20. forms over the warm ocean water
  12. 21. thunder and lightning
Down
  1. 1. formed over land
  2. 2. brings sunshine and good weather
  3. 4. type of tool that can detect precipitation
  4. 6. study fossil evidence
  5. 7. funnel shape, touches Earth's surface; rotates
  6. 12. air masses are classified by temperature
  7. 14. scientists who study the causes of weather
  8. 17. warm air mass is caught between two cold air masses
  9. 18. formed over water