In the Earth's crust, lower density igneous rock such as _________ make up the continents, and higher density volcanic rock such as _________ make up the ocean floor.
A) limestone; granite
B) granite; iron-rich silicates
C) granite; basalt
D) limestone; sandstone
E) marble; basalt

Question

Quizplus · Accepted Answer

Granite is a lower density igneous rock that forms the continents, while basalt is a higher density volcanic rock that makes up the ocean floor. Limestone, sandstone, marble, and iron-rich silicates do not have the same density or geological locations as granite and basalt.

In the Earth's Crust, Lower Density Igneous Rock Such as _________