Quiz- Igneous rocks

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

Molten rock that flows out onto the Earth's surface.

• Magma
• Lava
• Sedimentary rock

Rock that form and cool slowly below the Earth's surface form what size of crystals?

• Small
• Large
• none

A rock that has large crystals and is dark in color is classified as

• Plutonic, mafic

• Plutonic, felsic

• Volcanic, mafic

• Volcanic, felsic

A rock with small crystals and is dark in color could be classified as

• Plutonic, mafic

• Plutonic, felsic

• Volcanic, mafic

• Volcanic, felsic

Obsidian's glassy texture indicates that it formed

• slowly, deep below Earth's surface

• slowly, on Earth's surface

• quickly, deep below Earth's surface

• quickly, on Earth's surface

Which texture best describes an igneous rock that formed deep underground?

• glassy

• vesicular

• fine grained

• coarse grained

Which igneous rock has a vesicular texture and contains the minerals potassium feldspar and quartz?

• andesite

• pumice

• scoria

• pegmatite