Answer:
A single seater best accompanied by circus music and great balance.
A metal snake that runs on tracks.
Fred and Wilma's child, named after a stone.
I usually wear a yellow coat. I usually have a dark head. I make marks wherever I go.
One time every year, there is a very special day. Little have the same, everyone party a different way.
What is round, has a twin, and sees more than most?