Lay the balloon flat. Cut a circle of tissue to cover the top opening and glue it over the top hole in the balloon. Fold the tissue over the wire and glue in place 9. Gently open the finished balloon and check for large holes. Patch them with pieces of tissue paper cut to fit.
Small holes are ok.
They won't keep the balloon from flying. If desired, attach the tether line and name and address tag. To launch the balloon , hold the bottom, open end of the balloon over the hot stove and allow it to fill with hot air. The cold air is more dense and sinks while the warmer, less dense air in the balloon rises. Convection is the action of warm air rising and cold air sinking.