Igneous Rocks ESRT

Front

How is an igneous rock formed?

Back

Solidification of magma or lava

Front

Is this igneous rock intrusive or extrusive?

Back

Intrusive

Front

Is this igneous rock intrusive or extrusive?

Back

Extrusive

Front

Which igneous rock is made of 100% olivine? Options: Obsidian, Andesite, Dunite, Pegmatite

Back

Dunite

Front

Is pumice mafic or felsic?

Back

Felsic

Front

Which of the following is a fine-grained mafic igneous rock?
Pegmatite, Basalt, Diorite, Obsidian

Back

Basalt

Front

What is the difference between granite and pegmatite?

Back

Crystal size

Front

A vesicular igneous rock is

Back

extrusive

Front

Which igneous rock is glassy and felsic?

Back

Obsidian

Front

Is this rock mafic or felsic?

Back

Mafic