Question

A scientist collects a magma sample that took hundreds of years to cool into rock. Which mineral crystals are most likely to be found within the rock?

a. fine-grained
b. Large
c. Crystals won't form.
d. Irregular structures

Answer 1

If the magma cools slowly, large crystals form in the rock.

Step-by-step explanation:

Igneous rocks can have different textures depending on how quickly they cool. If the magma cools slowly over hundreds of years, it has time to form large mineral crystals, resulting in a coarse-grained rock. On the other hand, if the magma cools quickly, the crystals are smaller, resulting in a fine-grained rock. Therefore, in the given scenario, the most likely mineral crystals to be found within the rock would be large crystals.