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ICSE Class 9 Geography Question 8 of 25

Rotation and Revolution — Question 10

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Question

Question 10

Assertion (A): A bulge in the middle portion of the earth and flattened top at the poles.

Reason (R): Centrifugal force always directed outward, i.e., away from the axis of rotation.

  1. Both A and R are true and R is the correct explanation of A.
  2. Both A and R are true but R does not explain A.
  3. A is true but R is false.
  4. A is false but R is true.
Answer

Both A and R are true and R is the correct explanation of A.

Explanation — Centrifugal force is an apparent outward force that acts on a rotating object. It is always directed outward, i.e., away from the axis of rotation. The speed of rotation has created a centrifugal force resulting in a bulge in the middle portion of the earth and flattened top at the poles.