Fun Fair Riddles

I go very fast, up and down. Then drop you fast--you scream, not cry! Only the brave people ride me! What am I?

Without me you can't start the fun. Hold me tight, don't lose me now! What am I?

I go in circles, not to fast. You ride a horse and have fun. What am I?

I am full of fun and sound and light, with rides and games from day to night. You need a ticket to go inside. What am I?

I am small and cute, you buy me last. You take me home to remember the past. I go in bags and make you smile. What am I?

I walk with music, dance, and fun. People clap as I go on. What am I?

I am big and round and high. You sit and look up at the sky. I go around but not too fast. What am I?