Which rock type is commonly formed by the solidification of molten rock beneath the surface?

Which rock type is commonly formed by the solidification of molten rock beneath the surface?

• A. Sedimentary rock
• B. Metamorphic rock
• C. Granite
• D. Igneous rock

Answer: (D)

Igneous rocks form when molten rock cools and hardens. When this cooling happens underground, it happens slowly, allowing crystals to grow larger. This creates rocks like granite, a common example of an igneous rock formed beneath the surface. Sedimentary rocks come from pieces that settle and cement together, and metamorphic rocks come from existing rocks that are altered by heat and pressure. So, the rock type produced by solidifying molten rock beneath the surface is igneous rock.

Igneous rocks form when molten rock cools and hardens. When this cooling happens underground, it happens slowly, allowing crystals to grow larger. This creates rocks like granite, a common example of an igneous rock formed beneath the surface. Sedimentary rocks come from pieces that settle and cement together, and metamorphic rocks come from existing rocks that are altered by heat and pressure. So, the rock type produced by solidifying molten rock beneath the surface is igneous rock.