Earth's Layers and Rock Cycle

Which of Earth's layers is the hottest?

• Crust

• Mantle

• Outer core

• Inner core

Which of Earth's layers is the coolest?

• Crust

• Mantle

• Outer core

• Inner core

Earth's core is made of:

• Iron and nickel

• Hydrogen and oxygen

• Molten rock

• Aluminum and iron

Tags

NGSS.MS-PS1-1

Which layer of Earth is the thinnest?

• Crust

• Mantle

• Outer core

• Inner core

Which layer of Earth is the thickest?

• Crust

• Mantle

• Outer core

• Inner core

What is the basic composition of Earth's core?

• Solid inner core surrounded by liquid outer core

• Liquid inner core surrounded by solid outer core

• Both are liquid

• Both are solid

What is Earth's mantle made of?

• Hydrogen and helium

• Molten rock

• Iron and nickel

• Aluminum

The inner core of Earth is solid because of the:

• extreme temperature

• extreme pressure

• rate of rotation

• magnetic field

Tags

NGSS.HS-ESS2-3

Which layer of Earth has convection currents, which cause tectonic plates to move over time?

• Crust

• Mantle

• Outer core

• Inner core

Tags

NGSS.MS-ESS2-3

Which best explains the movement of tectonic plates?

• They move several miles per year

• They move several centimeters per year

• They move several feet per year

• They move several kilometers per year