The Rock Cycle Review

What is the primary characteristic of a glassy texture in rocks?

• Large crystals

• No visible crystals

• Many air pockets

• Dark color

What type of rock is Obsidian?

• Sedimentary

• Metamorphic

• Igneous

• Fossiliferous

Why does Pumice float when put in water?

• It is light

• It is lightweight due to gas pockets

• It is made from light materials

• It is an Igneous Rock

What happens to sediments in the rock cycle?

• They melt into magma

• They crystallize into igneous rock

• They get transported and deposited under water

• They become metamorphic rock

What are sedimentary rocks formed from?

• Magma

• Products of weathering and erosion

• Lava

• Metamorphic processes

Which process involves the breakdown of rocks?

• Erosion

• Weathering

• Sedimentation

• Metamorphism

Organic sedimentary rocks are formed from what type of processes?

• Chemical reactions

• Biological processes

• Physical weathering

• Volcanic eruptions

What is an example of a clastic sedimentary rock?

• Limestone

• Chalk

• Shale

• Gypsum

What is an example of a chemical sedimentary rock?

• Conglomerate

• Limestone

• Coal

• Shale

Which type of sedimentary rock can be formed from large pebbles?

• Organic

• Chemical

• Clastic

• Metamorphic