Igneous Rocks Quiz

What does the word 'igneous' mean?

• Air

• Earth

• Water

• Fire

What is magma?

• Solid rock inside Earth

• A cold liquid found under the ocean

• A type of mountain

• Hot liquid made of molten rock

What is lava?

• Frozen gas from volcanoes

• Magma that reaches the Earth's surface

• A type of sedimentary rock

• Water from volcanoes

What results from the cooling and solidification of lava at the Earth's surface?

• Extrusive igneous rocks

• Sedimentary rocks

• Metamorphic rocks

• Intrusive igneous rocks

What are extrusive igneous rocks also known as?

• Crystal rocks

• Volcanic rocks

• Sedimentary rocks

• Metamorphic rocks

What happens to magma that does not reach the Earth's surface?

• It evaporates

• It cools slowly and forms intrusive igneous rocks

• It forms sedimentary rocks

• It disappears

What are the large crystals formed by slow cooling of magma known as?

• Lava rocks

• Small crystal rocks

• Extrusive igneous rocks

• Intrusive igneous rocks

What are the two types of igneous rocks?

• Sedimentary and metamorphic rocks

• Extrusive and intrusive igneous rocks

• Granite and diorite

• Pumice and obsidian

Which type of igneous rock is used in making lightweight concrete?

• Obsidian

• Granite

• Diorite

• Pumice

What is obsidian used for?

• Making glass

• Road construction

• Ornaments

• Building material