Earth Layers and Density Review

Starting from the inside, the order of the Earth's layers is: inner core, outer core, lower mantle, upper mantle, and lastly the (a)   .

The outermost (top) solid layer of the Earth is called the

• upper mantle

• outer core

• inner core

• crust

• lower mantle

The layer that lies beneath the lower mantle and surrounds the inner core.

• upper mantle

• outer core

• inner core

• crust

The solid, dense center of our planet that extends from the bottom of the outer core to the center of the Earth..

• mantle

• outer core

• inner core

• crust

Which layer has the highest density (most dense)?

• Crust

• Lower and Upper Mantle

• Inner Core

• All the layers have the same density

• Outer core

What layer is the thinnest?

• Crust

• Upper and Lower Mantle

• Inner Core

• Outer core

True or False...You can touch only one of the Earth's layers.

• True
• False

Which layer of Earth is located above the outer core?

• crust

• inner core

• lower mantle

• upper mantle

Temperature _____________________ as you go deeper into the earth.

• increases

• decreases

• stays the same throughout all the layers

What is the core made of?

• steel
• iron 
• aluminum
• iron and nickel