Igneous Rocks and Minerals Lab

A type of rock that forms from the cooling of molten rock at or below the surface of the earth

• Igneous Rock
• Metamorphic Rock
• Sedimentary Rock
• chemical Rock

Igneous rock that forms from lava on Earth's surface

• Organic Rock
• Intrusive Rock
• Clastic Rock
• Extrusive Rock

Igneous rock that forms when magma hardens beneath Earth's surface

• intrusive Rock
• compaction
• Chemical Rock
• Clastic Rock

Extrusive igneous rock 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

What do basalt, pumice, and obsidian have in common?

• They form on Earth's surface from the cooling of lava.
• They are fine-grained.
• Their crystal grains are small and hard to see.
• They have all of these things in common.

What statement is true about the sample of diorite shown?

• Diorite is an extrusive igneous rock.
• Diorite is coarse-grained because its crystals are large and easy to see.
• Diorite is fine-grained because its crystals are small and hard to see.
• Diorite is a mineral because of its crystal structure.

Two ways to describe igneous rocks are _____

• Intrusive and Extrusive
• Gray and White
• Foliated and Non-Foliated
• Clastic and Biochemical

Where is magma?

• inside the earth

• on the crust

How do Intrusive Igneous rocks cool?

• quickly
• slowly
• really fast