Igneous Rocks

Igenous rock that forms from lava that erupted onto Earth's surface

• intrusive rock

• extrusive rock

Tags

NGSS.MS-ESS2-1

Igneous rock may form on or beneath Earth's surface

• true

• false

How are igneous rocks classified?

Answer explanation

Igneous rocks are classified according to their origin, texture and mineral composition.

Igneous rock is any rock that forms from ______.

What is one of the most common extrusive rock

Answer explanation

Basalt

Igneous rock that formed when magma hardens beneath Earth's surface is called _________ ____.

What is the most common intrusive rock

Answer explanation

Granite

How can we determine the texture of igneous rocks?

Answer explanation

The texture depends on the size and shape of of its mineral crystals

Rapidly cooling lava forms ____ ________ igenous rocks with small crystals.

• fine-grained

• coarse-grained

Tags

NGSS.MS-PS3-4

Slow cooling magma forms _____ ______ igneous rocks with large crystals.