Earth Layers Quiz

What is the outermost layer of the Earth called?

• Mantle

• Core

• Crust

• Lithosphere

Which layer of the Earth is composed mostly of iron and nickel?

• Crust

• Mantle

• Inner Core

• Outer Core

The Earth's mantle is primarily made up of what?

• Water and ice

• Rocks and minerals

• Iron and nickel

• Magma and lava

What is the thickest layer of the Earth?

• Crust

• Mantle

• Outer Core

• Inner Core

Which layer of the Earth is liquid?

• Crust

• Mantle

• Outer Core

• Inner Core

How do scientists know about the Earth's inner layers?

• Direct observation

• Space telescopes

• Seismic waves

• Deep drilling

What is the approximate temperature of the Earth's core?

• 1,000°C

• 3,000°C

• 5,000°C

• 6,000°C

The boundary between the Earth's crust and mantle is known as what?

• Moho Discontinuity

• Lithosphere

• Asthenosphere

• Troposphere

What is the main component of the Earth's crust?

• Iron

• Oxygen

• Silicon

• Aluminum

The Earth's inner core is solid due to:

• Its composition of iron and nickel

• The presence of water

• High pressure

• Low temperature