Modified from image courtesy of USGS
Which of the following best describes the process shown in the diagram?
A.
Tectonic plate motion forces magma downward.
B.
Tectonic plates move closer to each other, which forms magma.
C.
Magma moves upward and crystallizes, forming new rock.
D.
Solid rock liquefies as it reaches the surface and flows outward
1 answer
The best description of the process shown in the diagram at a mid-ocean ridge is:
C. Magma moves upward and crystallizes, forming new rock.
At mid-ocean ridges, tectonic plates are pulling apart, allowing magma from the mantle to rise to the surface, where it cools and solidifies to form new oceanic crust.
