Question: When you talk about it, it disappears. What is it? A. A secret B. Silence C. Time
Answer: A and B. If you talk about silence then it's not silent anymore. If you talk about a secret, then other people know about it so it's not a secret anymore.
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?