I follow you everywhere you go, but the moment the sun goes down, I abandon you. What am I?

I am tall when I am young, short when I am old, and my favorite hobby is weeping hot wax onto your nice wooden table. What am I?

I am born big, live fast, and shrink down to nothing as I provide you with light. What am I?

If an electric train is traveling north at 80 miles per hour and the wind is blowing fiercely from the west at 50 miles per hour, in which direction does the smoke blow?

What has teeth all the way across, but has never taken a bite of food in its entire existence?

What kind of coat is best put on completely wet?

I spend all day spinning in circles inside a dark, wet prison, and when I finally escape, I am soaking wet and dizzy.