2. When a star comes closer to Earth, the wavelength of its light ___. (2 points) Responses remains the same. remains the same. increases (gets longer). increases (gets longer). decreases (gets shorter).

Answer 1

When a star comes closer to Earth, the wavelength of its light decreases (gets shorter). This phenomenon is known as the Doppler effect, specifically in the context of light, it leads to a blueshift. So, the correct response is: decreases (gets shorter).