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ICSE Class 9 Geography Question 6 of 19

Earth's Structure — Question 14

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Question

Question 14

Assertion (A): The thickness of the lithosphere is very fragile compared to the nature and composition of the earth.

Reason (R): There are continuous changes in the earth's crust due to forces of nature.

  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 — Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A) because the lithosphere, though solid, is thin and constantly affected by natural forces like earthquakes and volcanic activity, leading to its fragile state.