Igneous Rocks

How are igneous rocks classified?

• origin, texture and mineral composition

• origin, color and texture

• texture, color, and mineral composition

• by their grains

Where is magma found?

• inside Earth

• on the surface of the Earth

Where is lava found?

• inside Earth

• on the surface of the Earth

How do extrusive igneous rocks form?

• from lava that erupted onto Earth's surface

• from magma that hardened beneath Earth's surface

Tags

NGSS.MS-ESS2-2

How do intrusive igneous rocks form?

• from lava that erupted onto Earth's surface

• from magma that hardened beneath Earth's surface

Fine-grained igneous rocks with small crystals formed from

• rapidly cooling lava

• slowly cooling magma

Tags

NGSS.MS-PS1-4

Coarse-grained igneous rocks with large crystals formed from

• rapidly cooling lava

• slow cooling magma

Tags

NGSS.MS-PS1-4

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

• fine-grained

• coarse-grained

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

• fine-grained

• coarse-grained

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

• rapidly cooling lava

• slowly cooling magma

Tags

NGSS.MS-ESS2-1