Quiz 3.2: Layers of the Earth

Which of the following is the outermost layer of the Earth?

• Mantle
• Inner core
• Outer core
• Crust

What is the primary composition of the Earth's crust?

• Iron and Nickel
• Oxygen, Silicon, Aluminum
• Magnesium and Iron
• Liquid rock and gas

The Earth's mantle is mostly composed of:

• Solid rock
• Molten iron
• Gaseous elements
• Water

Which layer of the Earth is in a liquid state?

• Crust
• Mantle
• Inner core
• Outer core

What is the state of matter of the Earth's inner core?

• Liquid
• Gas
• Solid
• Plasma

Which layer of the Earth has the highest temperature?

• Crust
• Mantle
• Outer core
• Inner core

The thickest layer of the Earth is:

• Crust
• Mantle
• Outer core
• Inner core

What happens to temperature as you move deeper into the Earth?

• It decreases
• It remains the same
• It increases
• It fluctuates randomly

What is the main component of the Earth's outer core?

• Iron and nickel
• Oxygen and silicon
• Aluminum and magnesium
• Carbon and nitrogen

Which layer of the Earth is responsible for Earth's magnetic field?

• Crust
• Mantle
• Outer core
• Inner core