Why do scientists observe blueshift in certain stars?(1 point)

Question

Responses

Stars with lower temperatures emit more light waves at the blue end of the spectrum.
Stars with lower temperatures emit more light waves at the blue end of the spectrum.

Stars with higher temperatures emit more light waves at the blue end of the spectrum.
Stars with higher temperatures emit more light waves at the blue end of the spectrum.

Light wave frequencies increase as an object moves toward the observer.
Light wave frequencies increase as an object moves toward the observer.

Light wave frequencies decrease as an object moves toward the observer.

Answer 1

The correct response is:

Light wave frequencies increase as an object moves toward the observer.

This phenomenon is known as the Doppler effect, where the light from a star that is moving towards us is shifted to higher frequencies, resulting in a blueshift.