Air Pressure Puzzle

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Across
  1. 3. Caused by changing from high to low pressure.
  2. 4. Tool used to measure atmospheric pressure.
  3. 5. Differences in weather cause__________.
  4. 6. What kind of pressure usually brings rain?
  5. 7. Caused by gravity's pulling air down.
  6. 8. Air moves from______to low pressure.
Down
  1. 1. What kind of pressure usually brings clear skies?
  2. 2. Pressure__________with an altitude increase.
  3. 4. What are high pressure systems marked with on a weather map?
  4. 5. Pressure often influences__________.