Summer is here and we are looking for creative ways to cool down. Today we made hollow balls of ice. To make these you need balloons, food coloring and a faucet.
Take a few drops of food coloring and drop them in each balloon. Next, fit the end of the balloon around your sing faucet and turn your water on. Fill the balloon until it is the size of a grapefruit and tie off the end. Place the water balloons in the freezer. Don't let them sit there for days or you will have solid blocks of ice. Only put them in there for two or three hours. The longer you leave it in there the more solid they will become.
This can be a nice experiment. Leave one in for three hours and another for two and compare the thickness of the ice.
Variations of this idea:
Fill a tub with ice and watch them float. Do the thicker ice balls float better?
Give your children salt, baking soda, and sugar. What happens?
Go bowling with the ice balls. Set up plastic bottles to try to knock over with your ice balls.
Have you been playing with ice? Leave a comment and tell us all about it!