Lucas's crossword

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Across
  1. 4. measures the amount of rainfall over a specified period of time
  2. 7. weather tool that measures temperature
  3. 8. weather tool that measures the amount of air
  4. 9. when clouds form at the ground
Down
  1. 1. when warm air collides with cold air
  2. 2. weather tool that measures wind speed
  3. 3. when
  4. 5. a funnel shaped cloud
  5. 6. someone who studies climate and weather