Igneous Rocks Quiz

Which of the following is an example of an igneous rock?

• Sandstone

• Basalt

• Limestone

• Shale

What is the main process that forms igneous rocks?

• Erosion

• Cooling and solidification of magma or lava

• Compaction of sediments

• Heat and pressure

Which rock is intrusive?

• Granite

• Basalt

• Obsidian

• Pumice

Which rock type cools quickly and has small crystals?

• Intrusive igneous rock

• Extrusive igneous rock

• Metamorphic rock

• Sedimentary rock

Define igneous rock.

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Explain the difference between intrusive and extrusive igneous rocks.

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What is magma? How is it different from lava?

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Name two intrusive and two extrusive igneous rocks.

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How can igneous rocks be used in construction? Give an example.

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