Understanding Earthquakes-NatGeo

What is the Earth's inner core made of?

• Superheated metal

• Molten rock

• Solid rock

• Solid iron and nickel

What is the majority of the Earth made of?

• Molten rock

• Solid iron and nickel

• Superheated metal

• Solid rock

What is the thickness of the Earth's mantle?

• 1,800 miles

• 4 miles

• 3500 degrees

• 750 miles

What is the crust of the Earth made of?

• Molten rock

• Solid iron and nickel

• Superheated metal

• Solid rock

What causes the plates on the Earth's crust to move?

• Magnetic currents

• Molten rock currents

• Ocean currents

• Wind currents