Rock Types

What is the outer most layer on Earth?

• Core
• Mantle
• Crust

What are the three main types/classifications of rocks?

• Metamorphic, igneous, sedimentary
• Coal, basalt, gneiss
• Metamagic, marble, limestone

How are sedimentary rocks formed?

• Heat and pressure causes the rock to change
• Layers of sediment over time compact
• Melting magma escapes a volcano

We talked about several types of erosion. What are they?

• Chemical, mechanical, water, and gravity
• Mechanical, gravity, wind, and ice
• Wind, water, ice, and gravity

Fossils are most commonly found in _______ rock. 

• Igneous
• Sedimentary
• Paleolithic

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

• Sedimentary
• Igneous
• Metamorphic

Intrusive igneous rocks form slowly and crystals form in the rock. Where are intrusive rocks formed?

• Outside the volcano
• Inside the volcano
• In the air as it falls

When lava explodes from a volcano and cools and hardens quickly, what kind of rock does it form?

• Expensive
• Internal
• Extrusive

Which type of rock contains minerals arranged in crystals and forms when molten lava rock cools and turns solid? 

• metamorphic
• igneous rock
• layered rock

Which type of rock means “to change in form?”

• Sedimentary
• Igneous
• Metamorphic