True or False
Scientists is able to know that the Earth’s outer core is liquid because P waves are transmitted through it.
Scientists is able to know that the Earth’s outer core is liquid because P waves are transmitted through it.
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true By tracking seismic waves, scientists have learned what makes up the planet's interior. P-waves slow down at the mantle core boundary, so we know the outer core is less rigid than the mantle. S-waves disappear at the mantle core boundary, so the outer core is liquid.