Question

question 17 of 25 what happens to light waves from a star as the star moves toward earth? a. they appear to stop. b. they appear to shift toward red. c. they appear to become mechanical waves. d. they appear to shift toward blue.

Explanation:

When a star moves towards Earth, the light waves experience a blueshift due to the Doppler effect. The wavelength of the light decreases, and it shifts towards the blue - end of the spectrum.

Answer:

D. They appear to shift toward blue.