Good Riddles

Question: What do you call a banana that likes to dance?

Question: You feel me but can't touch me, you can hear me but can't see me. I move leaves in trees, you need me to live. At my highest speeds i uproot trees and mow down houses. I cause waves over the ocean. I've been around since the beginning of life. What am I?

Question: You have 20 sick sheep, one dies. How many are left?

Question: How can a pants pocket be empty but still have something in it?

Question: Can you finish this pattern? j, f, m, a, m, j, j, a, s, o, n, _?