Question: For the next three questions, consider shadow zones. What creates a P wave shadow zone and what is the location of the P wave shadow

For the next three questions, consider shadow zones.

What creates a P wave shadow zone and what is the location of the P wave shadow zone relative to the earthquake focus?

What creates an S wave shadow zone and what is the location of the S wave shadow zone relative to the earthquake focus?

Describe how the S and P waves change as they encounter each of the layers of the earth and how they are influenced by changes in density of the Earth. Is the speed of the P wave greater or smaller than the speed of the S wave? Based on your descriptions, sketch how P-waves and S-waves vary according to the layers and densities of Earth.

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Did you trace the history and milestones enough to provide a clear timeline?

Did you offer hard data that is verifiable with sources identified in text?

Did you provide headings that offer structure to the information? [C]