Igneous Rock Lab

Intrusive Igneous rocks will be 

• coarse grain
• fine grain

If an Igneous rock is dark-colored, what is the amount of silica?

• high
• low
• doesn't matter

Where is magma?

• inside 
• outside

If a rock is formed from lava, what will the grains be?

• coarse
• fine

How do Intrusive Igneous rocks cool?

• quickly
• slowly
• really fast

Extrusive forms _________crystals

• small
• large

The process by which igneous rocks are formed...

• heat and pressure deep underneath earth's surface
• melting and cooling of magma
• compaction and cementation of sediments

The type of igneous rock formed depends on all of the following EXCEPT _____.

• the amount of dissolved gases in magma
• where the rocks are formed and the rate at which it cooled
• the amount of weathering and erosion the rock has been through
• the mineral composition of the magma

High or Low Silica?

• high
• low

Coarse or Fine?

• coarse
• fine