Chapter 26, Problem 9RAT

Rocks buckle and fold when subjected to

(a) tensional force.

(b) the release of stored elastic energy.

(c) stretching of Earth's crust.

(d) compressional force.

To determine

The correct option for the statement "Rock buckle and fold when subjected to".

Answer to Problem 9RAT

The correct option for the statement "Rock buckle and fold when subjected to" is (d).

Explanation of Solution

Under the action of tensional force, rock may fracture, but they do not buckle and fold. The earthquake generates when stored elastic energy in rocks is released, not buckling and fielding of rocks occur due to this. Stretching in the earth's crust does not result in buckling and the folding of the rocks.

When the compressible force is applied on the rocks, they buckle and fold, just like cloth does when pushed from the two ends. So the option (d) is the correct answer.

Conclusion:

Therefore, the correct option for the statement "Rock buckle and fold when subjected to" is (d).