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How scientists use seismic waves to learn about the Earth's interior.
It is an educational content of CK-12 Foundation (to access some of the CK-12 contents you must be logged in).
Early seismolgists studying the travel times of seismic waves discovered that Earth has an inner and an outer core.
It is an educational content of CK-12 Foundation (to access some of the CK-12 content ...
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