Igneous Rocks

Fine-grained igneous rocks with small crystals formed from

• rapidly cooling lava

• slowly cooling magma

Is this igneous rock, porphyry, fine-grained or coarse-grained?

• fine-grained

• coarse-grained

How do intrusive igneous rocks form?

• from lava that erupted onto Earth's surface

• from magma that hardened beneath Earth's surface

Coarse-grained igneous rocks with large crystals formed from

• rapidly cooling lava

• slow cooling magma

Rocks are made out of minerals.

• True
• False

A type of rock that forms from the cooling of molten rock at or below the surface of the Earth

• Igneous Rock
• Metamorphic Rock
• Sedimentary Rock
• Chemical Rock

Diorite is an intrusive igneous rock. What does this tell you about it?

• it was formed from lava that erupted onto Earth's surface

• it was formed from magma that hardened beneath Earth's surface

• it was formed from rapidly cooling lava

What option below is NOT one of the uses of igneous rocks?

• statues

• kitchen counters

• building materials

• chalkboards

Describe the texture of the following igneous rock.

• smooth

• coarse

• vesicular

• glassy

Rhyolite is a fine-grained, extrusive, igneous rock. How did it form?

• rapidly cooling lava

• slowly cooling magma