Day 1 Brain Teasers 1.0

What belongs to you, but others use it more than you?

What travels around the world while staying in one spot?

What can you put in a bucket of water to make it lighter?

What starts with the letter T, is filled T, and ends with T 

What building has the most stories?

What comes down, but never goes up?

How can you make seven even?

What is so fragile that when you say its name, you break it? 

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

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