Can you blow up a balloon with your mouth?

For my science fair project, I want the hovercaft to float.I want to know if my mouth can make a latex balloon float.I've been told that you have to have a balloon in order to float.Is my breath large enough for it to float?Do you have any ideas for a high school science fair project if it doesn't happen?

You can find a business that sells balloons by looking in your phone book.If you tell them you're doing it for a school project, they'll probably be willing to fill your latex glove with helium.You could buy a balloon from them.The shiny plastic ones last longer because it is harder for him to escape through the balloon's skin.

There are grocery and drugstores that sell balloons.They are located near the exit to catch the attention of the kiddies and trap the parents into purchasing.

You will probably have to have one of your parents drive you since you don't have your own.Have fun.