Question

Assertion (A):
Thin and younger sediments on the ocean floor system.
Reason (R):
Sea floor spreading at the boundaries leading to creation of new floor.

In the context of Sea floor spreading theory, which one of the following is correct?

• A. (A) is true, but (R) is false
• B. Both (A) and (R) are true and (R) is the correct explanation of (A)
• C. (A) is false, but (R) is true
• D. Both (A) and (R) are true, but (R) is not the correct explanation of (A)

Answer 1

The correct option is B Both (A) and (R) are true and (R) is the correct explanation of (A)

As per Henry Hess,at ocean ridges new floor gets created with thinner floor and younger sediments on the ocean floor. As we move away from the ridges,floor is thicker due to accumulated sediments.