For light, a red shift indicates the light source moves
A)toward you.
B)away from you.
C)at right angles to you.
D)all of the above
E)none of the above

Question

Quizplus · Accepted Answer

A red shift in the light indicates that the wavelength of the light has stretched out, which happens when the light source is moving away from the observer. This is a result of the Doppler Effect, where the motion of a source affects the observed wavelength of light. Therefore, the correct choice is B, for "away from you."

For Light, a Red Shift Indicates the Light Source Moves