Earth's Structure

What is the second layer of Earth?

• crust

• inner core

• outer core

• mantle

Which of Earth's layers is composed mostly of liquid metal?

• crust

• inner core

• outer core

• mantle

What is the third layer of Earth?

• crust

• inner core

• outer core

• mantle

What is the fourth layer of Earth?

• crust

• inner core

• outer core

• mantle

What is Earth's thinnest layer?

• crust

• inner core

• outer core

• mantle

What is Earth's thickest layer?

• crust

• inner core

• outer core

• mantle

What indirect evidence have scientist used to determine the size of Earth's layers?

• continental crust

• rocks

• seismic waves

When a seismic wave goes through the layers it ________________.

• changes speed

• increases energy

• reverses directions

• stops moving

Tags

NGSS.MS-PS4-2

What do earthquake waves have in common with other waves?

• They travel at the same speed as light waves

• They carry the same amount of energy as sound waves

• They bend when they travel through different materials

• They have the same wavelength as radio waves

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

What do we call the center of the Earth?

• Mantle

• Crust

• Apple

• Core