How Do We Know about Layers Deep within Earth?
ES0402  The Structure of Earth

The internal structure of Earth is more complicated than the other models with which you have been working.

Jennifer Loomis, TERC

  !   Click the image to begin the animation. Use the slider and examine the wave patterns carefully to deduce Earth’s internal structure.

9. Observe the paths taken by P and S waves through Earth. Sketch the layers on your diagram and indicate if they are solid or liquid.

If you’re not sure of your answer, you can check your understanding on page 72 of your textbook.

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