Rocks and Minerals Review

What term is used to describe how a mineral reflects light?

• color

• luster

• streak

• hardness

Magma that cools slowly deep beneath Earth’s surface forms rocks with what size crystals?

• small

• large

• medium

• no crystals

Obsidian is a rock that is formed when lava is quickly cooled by water. What type of igneous rock is obsidian?

• Extrusive

• Intrusive

• Foliated

• NonFoliated

Applying heat and pressure to an existing rock deep beneath Earth’s surface will produce what type of rock?

• Extrusive

• Sedimentary

• Igneous

• Metamorphic

Rocks are a mixture of ________ and other materials.

• Minerals

• Crystals

• Sand

• Dirt

Tags

NGSS.MS-ESS3-1

If a sedimentary rock is formed from decayed plants or animals, what type of sedimentary rock would it be?

• Clastic

• Non-Clastic

• Organic

• Intrusive

If the minerals on a rock are arranged in sheets or bands, we refer to it as what term?

• Intrusive

• Extrusive

• Foliated

• Nonfoliated

Which rock type is formed from melting and cooling?

• Igneous

• Metamorphic

• Sedimentary

• Extrusive

Sandstone is an example of what classification of rock?

• Sedimentary

• Metamorphic

• Igenous

• Nonclastic

Which mineral is softest on Moh’s hardness scale?

• Diamond

• Mica

• Talc

• Quartz