Kids Riddles

Question: What kind of coat can only be put on when wet?

Question: What occurs once in a minute, twice in a moment and never in one thousand years?

Question:

The dirtier I am, the whiter I get,
Leave a mark on me when you stand, I'll leave a mark on you when you sit.

What am I?

Question: Why can't the Tyrannosaurus rex clap?

Question: You use me from your head to your toes,
the more I work the thinner I grow.

What am I?