A supermassive black hole erupts when ____. a. it collides ...

[Evvie72]

A supermassive black hole erupts when ____.
 
  a. it collides with a neutron star
 b. magnetic fields form tubes to channel the jets
 c. the accretion disk tilts to a new angle
 d. a sudden flood of matter flows inward producingan accretion disk
  e. starburst events irradiate the accretion disk with new energy

Question 2

Emission 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

[DHRUVSHAH]

Answer to Question 1

d

Answer to Question 2

b

[Evvie72]

Thanks for the timely response, appreciate it

[covalentbond]

YES! Correct, THANKS for helping me on my review