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Author Question: Supermassive black holes erupt in ____. a. any type of galaxy, and at random times b. elliptical ... (Read 36 times)

lilldybug07

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on: Jul 27, 2018
Supermassive black holes erupt in ____.
 
  a. any type of galaxy, and at random times
 b. elliptical galaxies only, when the last of their gas and dust is consumed
  c. galaxies that have been part of a collision or merger
 d. spiral galaxies only, during a burst of star formation
 e. irregular galaxies

Question 2

Absorption lines are produced by ____.
 
  a. atoms that become ionized
 b. electrons that transfer from a high energy level to a low energy level
  c. electrons that transfer from a low energy level to a high energy level
  d. the intensity of agitation of atoms in a hot gas
 e. the motion of an object toward or away from the observer


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Dunkey

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

c

Answer to Question 2

c


lilldybug07

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Reply 2 on: Jul 27, 2018
Great answer, keep it coming :)

xiazhe

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Reply 3 on: Yesterday
Gracias!

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