Author Question: Compare and contrast P and S seismic waves. What will be an ideal ... (Read 63 times)

Frost2351 · **on:** Jul 14, 2018

Compare and contrast P and S seismic waves.

What will be an ideal response?

Question 2

What is loess?

A) a dark, coarse sand that is eroded from sea cliffs by wave energy from the ocean
B) a human-made material that is a byproduct of the burning of high sulfur coal
C) a fine, glacially generated silt that is deposited by the wind
D) the rich dark topsoil that is found on the Japanese island of Honshu
E) a clay-like substance from which people in China use to make cement for urban areas

nguyenhoanhat · **Reply #1 on:** Jul 14, 2018

Answer to Question 1

Body waves are categorized as either P waves or S waves on the basis of their mode of propagation through Earth. P waves, or primary waves, result from the compression of material in Earth's interior. The material is alternately compressed and, as the wave travels away, stretched. Thus, a P wave travels as a series of compressions and expansions in the overall direction of wave movement, similar to the way sound travels or to the response of a spring or a Slinky. S waves, which are also called secondary or shear waves, are transmitted as displacements perpendicular to the overall direction of wave travel, like the movement of a wave on a string.

Answer to Question 2

C