Activity 5: A Density Model with Two Shells
Now that we have seen evidence that Earth is divided into a mantle and core, itís time to return to the problem of determining the distribution of mass in the planet. Here is another version of the density applet with Earthís interior divided into two shells. The object of this activity is to refine the density model you created in Activity 2.

Fig. 1: Two-shell model of the Earth.

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To complete Activity 5, select one of these files:

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