The best term to describe how light waves from a star are affected as it moves toward Earth is blueshift.

Here's why:

* Doppler Effect: The Doppler effect is a phenomenon where the frequency of waves changes as the source of the waves moves relative to an observer.

* Blueshift: When a light source is moving towards an observer, the light waves are compressed, resulting in a higher frequency. Since blue light has a higher frequency than red light, this shift is called "blueshift".

Key takeaway: Blueshift indicates that a star is moving towards us, while redshift indicates that a star is moving away from us.