This topic contains a solution. Click here to go to the answer

Author Question: What happens to P- waves and S-waves when they encounter the core-mantle boundary, and what does ... (Read 76 times)

CharlieWard

  • Hero Member
  • *****
  • Posts: 578

What happens to P- waves and S-waves when they encounter the core-mantle boundary, and what does
  this change in behavior indicate about the core? What will be an ideal response?



Question 2

Why has it been suggested that large earthquakes might be prevented by injecting water along isolated
  portions of fault zones that have been inactive for an unusually long time? When was this technique
  discovered? What will be an ideal response?




Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

ju

  • Sr. Member
  • ****
  • Posts: 325
Answer to Question 1

P-wave velocity abruptly decreases, and S-waves disappear, meaning that at least the outer core must
be liquid



Answer to Question 2

Local increase of fluid pressure can cause small earthquakes, which release stresses that would
otherwise build up to cause a larger earthquake. This phenomenon was first recognized when it was
discovered that liquid waste disposal by deep well injection at the Rocky Mountain Arsenal near
Denver, Colorado, was responsible for numerous small earthquakes in the area.





CharlieWard

  • Member
  • Posts: 578
Reply 2 on: Jul 15, 2018
Thanks for the timely response, appreciate it


raenoj

  • Member
  • Posts: 340
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

 

Did you know?

Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

Did you know?

Less than one of every three adults with high LDL cholesterol has the condition under control. Only 48.1% with the condition are being treated for it.

Did you know?

Hip fractures are the most serious consequences of osteoporosis. The incidence of hip fractures increases with each decade among patients in their 60s to patients in their 90s for both women and men of all populations. Men and women older than 80 years of age show the highest incidence of hip fractures.

Did you know?

There are approximately 3 million unintended pregnancies in the United States each year.

Did you know?

Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.

For a complete list of videos, visit our video library