Unit 3 Review Earth's Interior, Rocks, Minerals

Which rock type can be formed by adding heat and pressure to any of the three types of rocks?

• Igneous
• Metamorphic 
• no rock type forms this way
• sedimentary

Which type of rock is created when lava cools and hardens?

• sedimentary
• cement
• metamorphic 
• igneous

Granite is a type of igneous rock. What determines the size of the crystals that form in a sample of granite?

• how large the sample is
• how much impurities are in the granite
• how quickly the rock cooled
• how many times those minerals have been in granite before

Which type of physical processes below the results in the formation of metamorphic rocks?

• weathering & erosion
• Cooling & Crystalization
• heat & pressure
• deposition & eruption

Which question is the least useful to ask if you want to identify a mineral?

• Color
• Streak
• Hardness
• Special properties

The way a mineral reflects light is called its......

• Texture
• Cleavage
• Luster
• Streak

The way a mineral breaks along a flat surface is called........

• Luster
• Streak
• Fracture
• Cleavage

A student found a sample of a solid material that was gray, shiny and made of all the same material. What category does this sample best fit? 

• sedimentary rock
• igneous rock
• metamorphic rock
• mineral

A fourth grade class observes rocks. One sample is found in layers and feels rough and grainy. Which type of rock is it? 

• sedimentary rock
• igneous rock
• metamorphic rock
• granite

Obsidian, granite, and basalt are rocks formed from molten rock that has cooled. What kind of rocks are they?

• sedimentary rock
• igneous rock
• metamorphic rock
• fossils