What is the rock formed from cooling magma called?

What is the rock formed from cooling magma called?

• A. Igneous rock
• B. Inert gas
• C. Infiltration
• D. Infiltration capacity

Answer: (A)

Rocks are classified by how they form. When magma from deep within the Earth cools and solidifies, it becomes igneous rock. If the cooling happens underground, you get coarse-grained igneous rocks like granite; if it happens rapidly at the surface, you get fine-grained types like basalt or obsidian. The other terms don’t describe rock formation: an inert gas is simply a gas, and infiltration or infiltration capacity relate to how water moves through soil, not to rocks.

Rocks are classified by how they form. When magma from deep within the Earth cools and solidifies, it becomes igneous rock. If the cooling happens underground, you get coarse-grained igneous rocks like granite; if it happens rapidly at the surface, you get fine-grained types like basalt or obsidian. The other terms don’t describe rock formation: an inert gas is simply a gas, and infiltration or infiltration capacity relate to how water moves through soil, not to rocks.