Ch 4 Lesson 2 Igneous Rocks

Front

Two ways to describe igneous rocks are _____

Back

intrusive and extrusive

Front

Which processes lead directly to the formation of igneous rock?

Back

Melting and solidification

Front

A slow cooling igneous rock will have _____ crystals

Back

large

Front

Which characteristic of an igneous rock would provide the most information about the environment in which the rock solidified?

Back

texture

Front

Igneous rock that formed when magma hardens beneath the Earth's surface is called _____

Back

intrusive rock

Front

Igneous rock that forms from lava cooling on the Earth's surface is called _____

Back

extrusive rock

Front

The texture of an igneous rock is determined by its _____ and _____ during formation.

Back

cooling rate and mineral composition

Front

What is the main difference between intrusive and extrusive igneous rocks?

Back

Intrusive rocks cool slowly beneath the surface, while extrusive rocks cool quickly on the surface.

Front

An example of an intrusive igneous rock is _____

Back

granite

Front

An example of an extrusive igneous rock is _____

Back

basalt