Layers of the Earth Quiz

What are the two types of crust?

• Continental and oceanic

• Mantle and core

• Granite and basalt

• Igneous and sedimentary

What is the average thickness of the Earth's crust?

• 25 miles

• 100 miles

• 6 miles

• 1800 miles

What is the main difference between oceanic and continental crust?

• Density

• Composition

• Color

• Thickness

What is the mantle composed of?

• Silicate minerals

• Metals

• Water

• Carbon dioxide

What is the core of the Earth mostly made of?

• Silicate minerals

• Iron and nickel

• Granite and basalt

• Aluminum and magnesium

Which layer of the Earth is the densest?

• Lithosphere

• Mantle

• Asthenosphere

• Core

What is the outermost rigid layer of the Earth called?

• Lithosphere

• Asthenosphere

• Mesosphere

• Outer core

Which layer of the Earth is described as both elastic and able to flow?

• Inner core

• Outer core

• Mesosphere

• Asthenosphere