Question

Rift valleys can form when fractures in Earth's crust widen. The valley walls slowly move apart at a rate of only a few millimeters a year.

Which type of boundary would rift valleys form at?
A. Convergent
B. Divergent
C. Transform
D. Transform Fault

Answer 1

B. Divergent

Step-by-step explanation:

Rift valleys are usually formed at divergent margins where fractures in the earth's crust widens.

The fracture widens due the pulling apart of the plates that are involved.

• Most rift valleys are located within the continental crust.
• One of the prominent rift margins in the world is the East Africa rift valley system.
• This creates a crack within the earth that continues to grow as the separation continues.