What you need: piece of yarn (cut to about 6 feet), balloon, drinking straw,
tape, scissors. Pull the balloon to one end of the string and let go…Observe what happens. The balloon is full of air. When you let go of the balloon, causing the air to rush out of the opening, it creates a pushing force in the opposite direction. This makes the balloon move.
Greece
Estonia
PUMPKIN
FUN !!!