Which movement of the earth cause day and night?

The Earth's rotation does, like a basketball spinning
on the tip of Kobe Bryant's finger. 

Since the Earth is somewhat bigger than a basketball,
it takes almost 24 hours to do one complete spin.

The sun can only light up 50% of the Earth at a time.
As the Earth spins, it moves you and me in and out
of the lighted half.  Any time we're not in the lighted
half, we describe our situation as a "night" status.