Waves that are "blue shifted" have shorter wavelengths than those that are "red shifted."

Question

Quizplus · Accepted Answer

Blue shift is a phenomenon in which the wavelength of electromagnetic radiation (such as light) is shortened, causing an increase in frequency and energy. Red shift, on the other hand, is a phenomenon in which the wavelength is lengthened, causing a decrease in frequency and energy. Therefore, waves that are blue shifted have shorter wavelengths than those that are red shifted.

Waves That Are "Blue Shifted" Have Shorter Wavelengths Than Those