Answer:
It goes up and down the stairs without moving.
It is a gruesome form of betray.
Watches students at the prom to make sure there's no funny business.
What has black spots and a white face, is fat not thin, and helps you to win, but tumbles all over the place?
Prior to smartphones, people used this to record their lives.
I am a room that has a roof but no walls. What am I?