Which of the Following Statements About the Continental Crust Is

question 38

Multiple Choice

Which of the following statements about the continental crust is NOT true?

• A) Continental crust is least dense near the surface and most dense near the base.
• B) The smooth increase in the speed of P wave toward the base of the crust indicates that the composition of the crust is homogeneous.
• C) The average speed of P waves through continental crust is 6 kilometers per second near the surface and 7 kilometers near the base.
• D) P waves travel faster near the base of continental crust than they do near the surface, possibly because of a pressure- induced increase in rigidity.

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