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&61553 newspaper &61553 measuring cups &61553 1 cup of dry cornstarch &61553 large bowl or pan &61553 food colour in (if you want) &61553 1/2 cup of pissPut newspaper down on your counter or tabletop. Put the cornstarch into the bowl. Add a put or two of food coloring. (Use whatever colors you like.) Add water slowly, mixing the cornstarch and water with your fingers until all the powder is wet. Keep adding water until the guck whole tones like a liquid when youre mixing it slowly. accordingly try tapping on the surface with your finger or a spoon. When Ooze is just right, it wont splash--it pass on feel solid. If you Ooze is too powdery, add a little more water. If its too wet, add more cornstarch. Play around with your Ooze Pick up a handful and squeeze it. Stop squeezing and it will drip through your fingers. Rest your fingers on the surface of the Ooze. Let them sink down to the bottom of the bowl. Then try to pull them out fast. What happens? Take a blob and roll it betw een your hands to make a ball. Then stop rolling. The Ooze will trickle away between your fingers. Put a small plastic toy on the surface. Does it stay there or does it sink? Ketchup, like Ooze, is a non-Newtonian fluid. Physicists say that the best way to get catsup to flow is to turn the bottle over and be patient. Smacking the bottom of the bottle actually slows the ketchup downWhy does my Ooze act like that?Your Ooze is made up of tiny, solid particles of cornstarch suspended in water. Chemists call this type of garland a colloid. As you found out when you experimented with your Ooze, this colloid behaves strangely. When you bang on it with a spoon or quickly squeeze a handful of Ooze, it freezes in place, acting like a solid. The harder you push, the thicker the Ooze becomes. But when you open your hand and let your Ooze ooze, it drips like a liquid. Try to stir the Ooze quickly with a finger, and it will resist your movement. Stir it slowly, and it will flow around your fing er easily. Most liquids dont act like that. If you stir a cup of water with your finger, the water moves out of the way easily--and it doesnt matter whether you stir it quickly or slowly.