What Causes the Velocity of a P-Wave to Increase When

question 7

Multiple Choice

What causes the velocity of a P-wave to increase when it enters the inner core?

• A) The inner core is a much more dense material than the outer core.
• B) The inner core is a much less dense material than the outer core.
• C) The inner core is liquid,and thus the wave speeds up.
• D) The P-wave no longer has to compete with the S-wave for energy.

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