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Seismic waves change speed as they travel through Earth because of the four different layers. The layers differ, changing from a thin crust, to a rocky mantle, a liquid outer core, and finally a solid metallic core. Each of the layers affect the speed of seismic waves due to the differences in their makeup. They move faster through the crust and mantle than they do through the cores. In fact, "S" waves are unable to move through the liquid outer core at all.

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9y ago
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9y ago

Depending on the material, a wave can become propagated, compressed, and expanded. This can happen at different parts of the wave resulting in different sounds.

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12y ago

Yes they do indeed

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11y ago

Reflection, Refraction, and Transmission.

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11y ago

Reflection, Refraction and Transmission.

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Q: What are three things that can happen to wave as it moves through different materials?
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