Astronomy multiple choices questions: Please answer all the question, I will def

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Astronomy multiple choices questions:

Please answer all the question, I will definitely give thumb up Thank you

Question 8 (2 points) Empirically-observed laws such as the M-sigma relation indicate that black hole growth and galaxy growth are likely independent, uncorrelated physical phenomena. O True O False Save Question 9 (2 points) In terms of black hole formation and growth, Astronomers do not know if black holes came before galaxies or if galaxies came before black holes O True O False Question 10 (2 points) The masses of black holes in galaxies with quiet nuclei can be determined from O random motion of stars O organized motion of stars O organized motion of gas clouds O all of the above

Explanation / Answer

Question 8

False (The growth of the block hole does have a significance of the galaxy growth, when the gas cools, the galaxy is created,when this gas is fed into the black hole, it heats up and hence hinder the growth of the galaxy)

Question 9

False ( The astronomers have a firm conclusion that black holes formed first, which acts like a center to the forming proto galaxies)

Question 10

Organized motion of gas clouds (The gas heats up to extreme temperatures and emits lots of radiation, models of the material disks' behavior depend on the mass of the central black hole. Hence we can determine the black hole's mass)

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