How do igneous rocks form?Choose 1 answer:Choose 1 answer:(Choice A) through the weathering and erosion of existing rocksAthrough the weathering and erosion of existing rocks(Choice B) through the cooling and hardening of magma or lavaBthrough the cooling and hardening of magma or lava(Choice C) through the compaction and cementation of sedimentCthrough the compaction and cementation of sediment
Question
How do igneous rocks form?Choose 1 answer:Choose 1 answer:(Choice A) through the weathering and erosion of existing rocksAthrough the weathering and erosion of existing rocks(Choice B) through the cooling and hardening of magma or lavaBthrough the cooling and hardening of magma or lava(Choice C) through the compaction and cementation of sedimentCthrough the compaction and cementation of sediment
Solution
The correct answer is (Choice B) through the cooling and hardening of magma or lava. Igneous rocks form when magma (molten rock beneath the earth's surface) or lava (molten rock on the earth's surface) cools and hardens.
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