Answer:
I am heavy forward, but backward I'm not. What am I?
I am a protector of the scoreboard.
What room do ghosts avoid?
What word becomes shorter when you add two letters to it?
I make everyone blind. You can't see me but I will always come back for you. What am I?
Who makes it, has no need of it. Who buys it, has no use for it. Who uses it, can't see it. What is it?