Question

Why does the border between light and dark on the Moon change location?

Answer 1

the moon goes through it’s different phases so during these it changes it’s form from either a full moon to a waning crescent (the smallest of them all). if i’m wrong i’m sorry

Answer 2

Answer:

Because the sun only makes half the Moon visible leaving the other half dark making a border between light and dark (terminator).

Explanation: Hope this helped!