Question

Assertion (A): The forces of faulting lead to the formation of block mountains.

Reason (R): Block mountains are often separated by intervening basins called graben.

Options

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

• Both A and R are true but R does not explain A.

• A is true but R is false.

• A is false but R is true.

Answer 1

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

Explanation:

• Assertion (A) is true because faulting involves the breaking of the Earth's crust due to tectonic forces, leading to the formation of block mountains. These are large blocks of the Earth's crust that have been displaced due to faults.
• Reason (R) is also true because block mountains are often separated by graben,intervening basins that form when a block of the Earth's crust drops down between two faults. This forms a low area (graben) between the raised blocks (block mountains).