determine if objects c and d are moving towar...

determine if objects c and d are moving toward or away from you? explain your reasoning. (4 pts)

Answer

# Brief Explanations: The Doppler - effect is used here. If the spectral lines of an object are redshifted (shifted towards the red - end of the spectrum), the object is moving away. If they are blueshifted (shifted towards the blue - end), the object is moving towards. Comparing the spectral lines of Objects C and D to our galaxy's, Object C's lines are redshifted and Object D's lines are blueshifted. # Answer: Object C is moving away from you because its spectral lines are redshifted. Object D is moving toward you because its spectral lines are blueshifted.