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antoniya [11.8K]
3 years ago
7

How did scientists determine earths layers?

Geography
1 answer:
Hatshy [7]3 years ago
3 0
Scientists<span> can tell by observing the seismic waves that are recorded all over the surface of the </span>earth<span> from distant earthquakes. The seismic waves are reflected (bounced off) </span>layers<span> of different density, and they are refracted (bent) when they enter </span>layers<span> of different density.</span>
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