Layers of Earth

As you go deeper into Earth, the pressure ______ and the temperature ______.

• increases, increases

• increases, decreases

• decreases, increases

• decreases, decreases

________ determines how the layers of the earth form.

• density

• temperature

• pressure

Which layer is the densest?

• crust

• mantle

• core

Which physical layer is made of the crust and the rigid upper part of the mantle?

• lithosphere

• asthenosphere

• mesosphere

Which is the least dense layer?

• crust

• lithosphere

Which layer is the gooey part of the upper mantle?

• lithosphere

• asthenosphere

• crust

• outer core

Which chemical (major) layer is right above the core?

• crust

• mantle

• asthenosphere

• mesosphere

Which layer is composed of solid iron and nickel?

• crust

• mantle

• core

Which is the thinnest layer?

• crust

• mantle

• core

• lithosphere

Which layer is about 1/3 or 33% of Earth's mass?

• mantle

• mesosphere

• core