Igneous rocks may be either ____ if they form on or near Earth's surface, or ___ if they solidify under ground.
A) intrusive; volcanic
B) volcanic; extrusive
C) extrusive; intrusive
D) plutonic; intrusive
E) intrusive; extrusive

Question

Quizplus · Accepted Answer

Igneous rocks that solidify on or near Earth's surface are known as extrusive rocks, while those that solidify beneath Earth's surface are known as intrusive rocks. Option C correctly identifies these two types. Option A is incorrect because intrusive and volcanic are not interchangeable terms. Option B is incorrect because extrusive rocks do not solidify underground. Option D is incorrect because plutonic rocks are a specific type of intrusive rock, but not all intrusive rocks are plutonic. Option E is incorrect because the terms intrusive and extrusive are not interchangeable with each other.

Igneous Rocks May Be Either ____ If They Form on or near Earth's