Elements of a weather map

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Across
  1. 4. when water falls from the sky
  2. 6. the international unit for measureing air pressure
  3. 7. the technical name for a weather map
  4. 9. lines on a weather map that join points of equal air pressure
  5. 10. when warm air invades an area of cold air
  6. 11. the nautical unit for meauring speed
Down
  1. 1. a symbol used on weather maps to show wind speed and direction
  2. 2. weather systems that cause air to sink and move outward
  3. 3. weather systems that move clockwise int he soutehrn hemisphere and are caused by cooler temperatures
  4. 5. in the northern hemisphere weather systems spin the ___________ direction compared to the southern hemisphere
  5. 8. when cold air invades an area with warm air