Question

Igneous rocks form when minerals crystallize from cooling magma or lava. The more slowly the magma or lava cools, the larger the crystals are able to grow.
The images below show two different igneous rocks. Examine the images, and then answer the question that follows.
Assuming that these images are shown at the same scale, which of the following can be concluded based on the information above?
A.
Rock X formed from magma; rock Y formed from lava.
B.
Rock Y cooled more slowly than rock X.
C.
Both rocks cooled at the same rate.
D.
Rock X cooled more slowly than rock Y.

Answer 1

B.  Rock Y cooled more slowly than rock X.

Explanation:

Igneous rocks are rocks that forms from the solidification of magma either on the earth surface or beneath surface.

Those that forms on the surface are called volcanic rocks

Those that forms beneath are called plutonic rocks.

When magma forms within the surface, it cools and solidifies slowly. This will allow crystals to grow slowly. Therefore, the crystals will have a big size in the rock. The texture of the rock is now said to be coarse grained.

Those that forms on the surface cool rapidly and the minerals are fine grained. This is the case with X

Learn more:

Volcanic rocks brainly.com/question/5055821

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