Characteristics of Rocks Review

What are the three main classes of rock?

• igneous

• metamorphic

• sedimentary

• granite

• sediments

Which rock is formed when magma or lava cools down?

• metamorphic rocks

• limestone rock

• sedimentary rocks

• igneous rocks

When magma cools slowly _________ crystals form.

• small

• no

• large

• very few

When rocks are broken down into small pieces by wind, air, water, ice or gravity?

• erosion

• transported

• weathering

• deposition

What rock type is formed when layers of sediment are compress by gravity and cemented together?

• igneous rock

• obsidian rock

• metamorphic rock

• sedimentary rock

What type of rock has undergone changes in chemical or physical form?

• sedimentary rock

• metamorphic rock

• igneous rock

When rock change from one form to another is called  the _________.

• Rock Circle

• Rock Tranformation

• Rock Exchange

• Rock Cycle

Scientists divide rocks into groups based on how they form.

• True
• false

Intrusive rocks

• Forms at earth's surface
• Has a fine-grained texture
• Forms underground

Clastic rocks, organic rocks, and chemical rocks

• sedimentary rocks
• igneous rocks
• metamorphic rocks