Metamorphic Rocks and Their Formation

What is the process called that describes how rocks change from one type to another?

• Water cycle

• Rock cycle

• Carbon cycle

• Life cycle

What are rocks mostly made up of?

• Water

• Crystals of different kinds of minerals

• Air

• Plants

What happens to magma that is trapped deep inside the Earth?

• It cools quickly and forms small crystals

• It cools very slowly and forms large crystals

• It turns into water

• It disappears

What gives crystals their unique shapes?

• Their color

• The repeating pattern of atoms or molecules

• Their size

• Their temperature

How are rocks classified?

• By their color

• By how they were formed

• By their size

• By their location

What are the smallest grains in clastic sedimentary rocks called?

• Pebbles

• Sand

• Clay

• Silt

Which rock is made mostly of clay?

• Shale

• Sandstone

• Breccia

• Limestone

Which of the following is a condition that forms metamorphic rocks?

• High heat

• Freezing temperatures

• Exposure to sunlight

• Wind erosion

What does creating a metamorphic rock NOT do?

• Melt the rocks

• Transform rocks into denser, more compact rocks

• Create new minerals

• Change the form of the original rock

What happens to mineral crystals when magma cools quickly?

• They grow very large

• They do not have much time to grow and stay small

• They disappear

• They turn into sand