Question

The table shows the formation and characteristics of several types of rock.

Rock Formation Characteristics
Basalt Crystallization of magma on Earth's surface Dark-colored, fine-grained, often appears porous
Coal Deposition of material, including organic remains, that cement together over time Blackish or brownish color, combustible solid
Granite Crystallization of magma at depths under Earth's surface Multicolored, granular with large grains
Gneiss Exposure of materials to high heat and pressure Has alternating dark and light bands that appear in layers
Limestone Deposition of material, including organic remains, that cement together over time Lighter in color, contains fragmented skeletal remains of marine organisms
Slate Exposure of materials to high heat and pressure Multicolored, fine-grained, and layered

Which rocks from the table are igneous?
A.
coal and basalt

B.
limestone and slate

C.
slate and gneiss

D.
basalt and granite

Answer 1

D. basalt and granite

Both basalt (extrusive igneous) and granite (intrusive igneous) form by the crystallization of magma.