I'll be quick with this one. This website might possibly help you determining on what type of answer you need. Trust me, this site is golden :).
Sorry, if I couldn't respond with my own question.
https://quizlet.com/105691084/continental-margins-ocean-provinces-flash-cards/
Answer:
When Visible Light from an object is shifted twords the red end of the light spectrum
Explanation:
Hope this answer helps :)
