Planet Earth Quiz

What is Earth's largest layer?

• Crust

• Mantle

• Core

• Lithosphere

What is the Earth's outermost layer called?

• Mantle

• Core

• Crust

• Asthenosphere

Which layer of the Earth is liquid?

• Outer core

• Mantle

• Crust

• Inner core

What causes the Earth's plates to move?

• The rotation of the Earth

• Wind

• Convection currents in the mantle

• The moon's gravitational pull

What is the Earth's core made of?

• Rock

• Ice

• Metal

• Water

How many major tectonic plates are there on Earth?

• 5

• 7

• 12

• 15

What is the phenomenon called when two tectonic plates move away from each other?

• Convergent boundary

• Divergent boundary

• Transform boundary

• Subduction zone

Which layer of the Earth is the thickest?

• Crust

• Mantle

• Outer core

• Inner core

What is the main reason Earth is habitable?

• Its distance from the Sun

• Its size

• Its unique atmosphere

• Its magnetic field

What is the process called that recycles Earth's crust?

• Erosion

• Plate tectonics

• Photosynthesis

• Condensation