Multiple choice

Wind is controlled by - (a) horizontal pressure difference (b) earth's rotation (c) friction

  1. only a

  2. only b

  3. a, b and c

  4. a and c

  5. b and c
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Yes, wind is controlled by a combination of forces:

(a) The pressure-gradient force (PGF), which is the horizontal pressure difference

(b) The coriolis force, which is due to the rotation of earth

(c) Friction

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