A key characteristic of igneous rocks is that they ____.
A)are the youngest rocks on Earth
B)are made up of minerals that crystallized from molten rock matter called magma
C)never contain iron or magnesium
D)are not as hard as sedimentary rock
E)always contain more than three different mineral types

Question

Quizplus · Accepted Answer

Igneous rocks are formed from molten rock matter called magma, which cools and solidifies. The minerals in igneous rocks crystallize from this molten material, giving them a distinct, crystalline texture.

A Key Characteristic of Igneous Rocks Is That They ____