Test Review - Earth's Layers and Plate Tectonics

What are earth's three main layers?

• Core, Mantle, and surface
• Core, mantle, and crust
• Inner core, outer core, and mantle
• Upper mantle, lower mantle, and crust

The earth's magnetic field is caused by 

• The spinning of the earth's core
• The spinning of the earth on it's axis
• Convergent plates
• Divergent plates

The earth's core is made of ___________ and _______________.

• Iron and nickel
• Sulfur and oxygen
• Oxygen and silicon
• Dirt and water

What is the outermost layer of the earth?

• Core
• Crust 
• Mantle
• Continental plate

Which of the following is NOT one of the elements that compose the crust?

• Oxygen
• Silicon
• Aluminum 
• Neon

Which of the following describes why the earth's core can stay a SOLID at such high temperatures?

• Because it's made of iron
• Because it's made of nickel
• Because of extreme pressure due to gravity pushing inward
• All of these are true

The two types of earth's crust are : 

• Convergent crust and divergent crust
• Fault line crust and earthquake crust
• Volcano crust and seismic crust
• Oceanic crust and continental crust

Which crust is more dense, oceanic or continental crust?

• Oceanic
• Continental 
• They have the same density because they're actually made of the same material!

Continental crust is made of 

• Basalt
• Granite

Which of the following describes the boundary between the crust and mantle?

• Lithosphere
• Outer core
• Inner core
• Asthenosphere