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.

Explain the difference between intrusive and extrusive igneous rocks.

What is magma? How is it different from lava?

Name two intrusive and two extrusive igneous rocks.

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