If the vanes rotating in an object with 180 revolutions per minute causes air to move, then what with the vanes rotating causes air here to move?

Answer choices:
- It reaches the dew point
 - heat to cooler objects
 - whale movement
 - it flows to a lower level
 - Earth's axis of rotation is tilted
 - vanes on submarins
 - Martian winds rotating.
 - 180 revolutions per minute.

 

        180 revolutions per minute.  