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Author Question: Which method relies on the mass of a dark object revealing its presence? A) pulsars slowing down ... (Read 76 times)

K@

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on: Jul 27, 2018
Which method relies on the mass of a dark object revealing its presence?
 
  A) pulsars slowing down irregularly
  B) temporary brightening of a distant star by a gravity lens
  C) asteroidal occultations
  D) stellar eclipses
  E) ring occultations

Question 2

Relate Mercury's scarps to the differentiation process.
 
  What will be an ideal response?


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JaynaD87

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Reply #1 on: Jul 27, 2018
Answer to Question 1

B

Answer to Question 2

As Mercury was molten, the dense iron core formed from sinking iron and nickel. But smaller Mercury cooled off much faster than Earth, so its core cooled and started shrinking as it froze solid. This contraction caused the crust above to wrinkle and form the vast scarps that run across Mercury's crust.


K@

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Reply 2 on: Jul 27, 2018
YES! Correct, THANKS for helping me on my review

shailee

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Reply 3 on: Yesterday
Wow, this really help

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