There is a , which means the star is the sun.

Question

Use the spectrum readings from the sun (upper) and a star (lower) to answer the question.
(1 point)
 red shift  moving away from  moving toward  blue shift

Answer 1

The correct answer in the context of spectral readings is likely "red shift."

A red shift occurs when a star is moving away from us, causing the spectral lines to shift toward the red end of the spectrum. Conversely, a blue shift indicates that the star is moving toward us, with the spectral lines shifting toward the blue end of the spectrum.

If the context implies that the star behaves similarly to the sun, typically, if you are observing redshift, it would indicate that the star is moving away from us.

So, based on your question, if you're identifying which of these relates to the star in comparison to the sun and using the correct terminology, it would be "red shift."

Answer 2

But the qustions has two blanks

Answer 3

I apologize for misunderstanding your initial question. If there are two blanks, you might want to fill them with descriptions regarding the movement and the observable spectrum shift.

Given the choices you've provided, I suggest the following completion for your statement:

"There is a red shift, which means the star is moving away from the sun."

If the star was instead approaching the sun, you would use "blue shift" and "moving toward" instead. Adjust according to the context you have with your question!