In what sense are the quasars quasi-stellar? A) Their energy ...

[BRWH]

In what sense are the quasars quasi-stellar?
 
  A) Their energy production is hydrogen-helium fusion, like main sequence stars.
  B) They are upscale versions of O stars, yet hundreds of times more massive.
  C) Their luminosity comes from the millions of supergiants that compose them.
  D) Their spectra is like that of ordinary stars.
  E) In short time exposures, their images looked stellar.

Question 2

The ultimate source of energy that powers the Sun is
 
  A) chemical potential energy of hydrogen burning into helium.
  B) mass energy of hydrogen fusing into helium.
  C) gravitational potential energy of the contraction of the gas cloud that formed the Sun.
  D) kinetic energy of the orbital motion of the Sun.
  E) thermal energy of the hydrogen atoms in the Sun.

[brittanywood]

Answer to Question 1

E

Answer to Question 2

B

[BRWH]

TY

[brittanywood]

You're welcome