Which layer of Earth is the thickest layer?

• the inner core

• the crust

• the mantle

• the outer core

Which layer of Earth is made mostly of metal (iron and nickel)?

• crust

• mantle and core

• core

• mantle

Earth's crust is the thickest layer.

• True

• False

Earth's crust is the least dense layer.

• True

• False

The name of the innermost layer is

• the crust

• the mantle

• the outer core

• the inner core

The outer core is mainly composed of

• solid iron and nickel

• liquid iron and nickel

• semi-solid magma

• granite and basalt

Which is the correct order of the Earth's layers?

Outer most layer first.

• Crust, Outer Core, Mantle, Inner Core

• Crust, Mantle, Outer Core, Inner Core

• Inner core, Outer core, Mantle, Crust

Answer explanation

The outer most layer is the crust!

As you move deeper into the Earth's core, the temperature is:

• cooler

• hotter

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