Igneous and sedimentary rock review

Process which forms sedimentary rocks?

• heat and pressure

• cementation and compaction

• melting and solidification

The size of crystals in Igneous Rocks depends upon

• pressure

• the presence of air

• the presence of water

• cooling rate

Rocks that are formed from magma or lava are called

• sedimentary

• metamorphic

• igneous

• clastic

Igneous rocks are classified based upon their composition and

• size

• texture

• layers

• how they taste

Extrusive rocks are formed

• underwater

• in a lab

• deep underground

• above the surface of a volcano

Mafic rocks are

• light in color due to high silica content

• coarse-grained

• dark in color due to their high iron and magnesium content

• fine grained

Which of the following characteristics does pumice have?

• dark color and low density

• Mafic and coarse texture

• very coarse texture

• Vesicular and non-crystalline

Igneous rocks that cool quickly are...

• Fine-grained crystals.

• Coarse-grained crystals.

Igneous rocks that cool very fast will have what texture?

• Coarse-grained Crystals.

• Fine-grained Crystals.

• Vesicular

• No crystals.

These rocks are formed from either solutions or sediments from older rocks that have been weathered, eroded, deposited, compressed and cemented together.

• Igneous Rocks
• Sedimentary Rocks
• Metamorphic Rocks
• Minerals