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

Responses

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.

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.

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

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

1 answer

The correct response is:

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

Blueshift occurs when an object, such as a star, is moving closer to the observer. As the object approaches, the wavelengths of the light it emits become compressed, resulting in an increase in the frequency towards the blue end of the spectrum.