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As the pressure in the mantle increases, A. The wave's frequency decreases. B. The wave's speed increases. C. The wave's frequency increases. D. The wave's speed decreases

User Amika
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2 Answers

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Seismic velocities tend to gradually increase with depth in the mantle due to the increasing pressure, and therefore density, with depth
User Morgen
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B. the wave's speed increases.

User Stephen Rasku
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