FFF

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Across
  1. 2. The side of a hill or mountain.
  2. 5. To become different.
  3. 7. Very cold air that can move south from near the North Pole.
  4. 8. Moving air.
  5. 9. The ocean connected to the warm air that helps form Chinook winds.
Down
  1. 1. A best or most extreme result that has been measured.
  2. 3. The first word in the nickname for a warmer, drier part of the Black Hills.
  3. 4. The second word in the nickname for that warmer area.
  4. 6. A warm, dry wind that can raise winter temperatures quickly.