Answer:
It happens when something has been cut with H2O.
I never was but always will be. No one ever saw me but everyone knows I exist. I give people the motivation to better themselves every day. What am I?
I wear a red robe, with staff in hand, and a stone in my throat.
Used on a diamond and left on a board. It's great for a gymnast his grip to restore. What is it?
My life can be measured in hours. I serve by being devoured. Thin, I am quick. Fat, I am slow. Wind is my foe.
What did the piece of wood say when he saw the screwdriver and screws approaching?