Brain Teasers adapted from kfinkler

What is so fragile that sound can destroy it?

What goes up but never comes down?

What can you break without touching it?

When I was born I was big but the older I get the smaller I am. What am I?

What do you have to give before you can keep it?

How many outs are there in an inning?

What do you throw out when you want to use it, but take in when you don't want to use it?

You have three pills and are told to take one every half hour. How long do the pills last?

What grows down while it grows up?

What's always coming but yet never arrives?