Igneous Rocks Review

Intrusive Igneous rocks will be

• coarse grained with large crystals (bigger than 1 mm)

• fine grained with large crystals (bigger than 1 mm)

• coarse grained with small crystals (smaller than 1 mm)

• fine grained with small crystals (smaller than 1 mm)

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

Is this rock going to be high in silica or low in silica?

• High in silica because it is dark

• Low in silica because it is dark

• high in silica because it is green and silica is green in color

• low in silica because it is green and silica is green in color

Is Granite high or low in Silica?

• high

• low

• not enough information to tell

Describe this rock

• Intrusive , High Silica
• Intrusive , Low Silica
• Extrusive , High Silica
• Intrusive , Low Silica

How would you describe this rock?

• coarse-grained

• fine-grained

• vesicular

• glassy

Extrusive rocks that form quickly above the Earths surface have

• small crystals
• large crystals
• small and large crystals
• no crystals

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

• coarse

• fine

• porphyritic

The process by which igneous rocks are formed...

• heat and pressure deep underneath earth's surface

• melting of other rocks into magma that is cooled and hardened

• compaction and cementation of sediments

Which igneous rock contains potassium feldspar?

• diorite

• rhyolite

• basalt

• scoria

Tags

NGSS.MS-PS1-1