Which rock type is formed from a molten state?

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Multiple Choice

Which rock type is formed from a molten state?

Explanation:
Rocks formed from molten material come from cooling and solidification of a melt. When rock melts, magma underground or lava at the surface cools and crystals form as it solidifies, creating igneous rocks. The rate of cooling matters: slow cooling underground makes coarse crystals, while rapid cooling at the surface makes fine crystals or glass. Metamorphic rocks arise from existing rocks altered by heat and pressure, not from melting. A mineral is a single substance, not a rock type, and a pipe is a geological feature, not a rock. So the rock type formed from a molten state is igneous rock.

Rocks formed from molten material come from cooling and solidification of a melt. When rock melts, magma underground or lava at the surface cools and crystals form as it solidifies, creating igneous rocks. The rate of cooling matters: slow cooling underground makes coarse crystals, while rapid cooling at the surface makes fine crystals or glass. Metamorphic rocks arise from existing rocks altered by heat and pressure, not from melting. A mineral is a single substance, not a rock type, and a pipe is a geological feature, not a rock. So the rock type formed from a molten state is igneous rock.

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