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How Do The Densities Of Earth's Layers Compare?

Knowing that some things float on water while others sink gives a good idea about how density relates to things around you. Not only does density determine when something will sink in water, it also is responsible for the different layers on the Earth!

Below you will find photographs to represent the different layers of the Earth. At the right of each photograph, you will find the density for that layer.

Look closely at each layer and determine what the most correct order is. Then check your answer by highlighting the box under the photographs.


Density = 3 g/cm3


Density = .0013 g/cm3


Image courtesy of Reid Morgan

Density varies between14.5 g/cm3 at the core to 4.5 g/cm3 at the mantle.


Density = 1 g/cm3
Highlight the box below to check your answer.
B, D, A, C

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Teachers should view the Teacher Site Map to relate Sci-ber text and the USOE 7th grade science core.

Updated October 24, 2008 by: Glen Westbroek

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