How to use "snap" in a sentence

I heard a loud "snap"

At first, I think that maybe I am quick enough, but then I hear the snap of the gun and feel the explosion in my back.

There is a snap from behind the trees, and Owen thinks that maybe he should put his gun down, in a bush, nice and carefully like he told Junior to do

She wasn't the sort of person who would snap over a thing like this

With a sharp, loud, electronic snap that startled Tina, the computer abruptly began to churn out additional data, although she hadn't requested any