redshifts were used as supporting evidence for the big bang theory. which describes redshifts? check all…

redshifts were used as supporting evidence for the big bang theory. which describes redshifts? check all that apply. the light source and observer move closer together. observed light shifts to a longer wavelength. they indicate receding galaxies. observed light shifts to a shorter wavelength. the light source and observer move farther apart. they indicate approaching galaxies.

redshifts were used as supporting evidence for the big bang theory. which describes redshifts? check all that apply. the light source and observer move closer together. observed light shifts to a longer wavelength. they indicate receding galaxies. observed light shifts to a shorter wavelength. the light source and observer move farther apart. they indicate approaching galaxies.

Answer

Answer:

  • Observed light shifts to a longer wavelength.
  • They indicate receding galaxies.
  • The light source and observer move farther apart.

Brief Explanations:

Red - shift occurs when a light source moves away from an observer. This causes the observed light to shift to a longer wavelength (towards the red - end of the spectrum). It is an indication that the galaxy (light source) is moving away (receding) from the observer. When the light source and observer move closer together, it is a blue - shift, not a red - shift.