Question

When magma cools rapidly, it results in ________?

1) large crystals
2) small crystals
3) detritus
4) foliation
5) earthquakes

Answer 1

When magma cools rapidly, it results in small crystals.

Step-by-step explanation:

When magma cools rapidly, it results in small crystals. Extrusive igneous rocks, which form when magma flows out onto the surface or into cracks near the Earth's surface, cool quickly and do not have time for large crystals to grow. As a result, these rocks are fine-grained.