How Do Seismologists Know the Outer Core Is Liquid

question 27

Multiple Choice

How do seismologists know the outer core is liquid?

• A)P-waves are refracted upon arrival in the outer core
• B)S-waves are absorbed upon arrival in the outer core
• C)both S-waves and P-waves speed up in the outer core
• D)both S-waves and P-waves slow down in the outer core

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