Did you know you can stack water? We were able to stack 34 drops of water on this penny before it overflowed.
We put a piece of tissue under a needle and laid it on top of the water. The tissue sunk to the bottom, but the needle was able to float on top of the water. Water has surface tension(kind of like a thin layer of Saran wrap), but the needle is too light to break through the surface tension. Notice how you can see the needle print on the water?
This is a racedrop racetrack that I printed off a website. You tape the racetrack to some carboard and then tape a piece of wax paper over the racetrack. Then you get a waterdroplet on your finger and shake it onto the starting position on the track. Now you’re all set to see how quickly you can get your racedrop around the course and to the finish. Paul could do this a lot faster than I could. Water on our waxy racetrack reacts the same way water does on a duck’s back.
With a few sponge pieces, salt, water and some Mrs.Stewart‘s bluing, we were able to start a little crystal garden.
We’re having a lot of fun with science. I just can’t wait until we blow up the kitchen. (just kidding 😆 )