Which of the Following Descriptions of the Behavior of Seismic

question 23

Multiple Choice

Which of the following descriptions of the behavior of seismic waves is NOT correct?

• A) When seismic waves approach the boundary between two media at a relatively small angle, they may bounce, or reflect, off the surface.
• B) Changes in material, temperature, pressure, and physical state can all affect the speed of a seismic wave.
• C) Within the Earth, seismic wave speed tends to increase with depth.
• D) When seismic waves pass through the boundary between two media, the waves tend to change speed and bend, or refract, in several directions.

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