Chapter 27, Problem 9RAT

To determine

The correct option for the statement “Magma is generated at all of these plate boundaries EXCEPT”.

Answer to Problem 9RAT

The correct option for the statement “Magma is generated at all of these plate boundaries EXCEPT” is option (a).

Explanation of Solution

The magma is generated when the inside part of the Earth undergoes to compression force.

The divergent boundaries are formed due to the movement of the plates away from each other, so the magma is not generated due to the formation of a divergent boundary.

The oceanic-oceanic convergent boundaries form due to the movement of the plates of one ocean and other ocean towards each other, so compressive force generated at oceanic-oceanic convergent boundaries and magma erupts from the Earth.

The oceanic-continental and continental-continental convergent boundaries also undergo the compressive force at boundaries, so generates the magma.

Conclusion:

Therefore, the correct option for the statement “Magma is generated at all of these plate boundaries EXCEPT” is option (a).