Question

2. What happens to the spectral lines of a star

that is moving toward Earth?
A. The waves spread out, and the frequency of
each line increases.
B. The waves spread out, and the frequency of
each line decreases.
C. The waves compress, and the frequency of
each line increases.
D. The waves compress, and the frequency of
each line decreases.

Answer 1

A. The light waves squeeze together increasing wavelength

Step-by-step explanation: