Monday, February 11, 2019
Experiments :: essays research papers
&61553 newspaper &61553 cadence cups &61553 1 cup of dry cornstarch &61553 large bowl or pan &61553 food coloring (if you want) &61553 1/2 cup of piss enjoin newspaper down on your counter or tabletop. Put the cornstarch into the bowl. Add a drop or two of food coloring. (Use whatever colors you alike.) Add body of peeing slowly, mixing the cornstarch and water with your sensebreadths until all the powder is wet. Keep join oning water until the max feels like a liquid when youre mixing it slowly. Then try tapping on the surface with your finger or a spoon. When sludge is just right, it wont splash--it will feel solid. If you scoop 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 and through your fingers. Rest your fingers on the surface of the Ooze. Let them sink down to the ass of the bowl. Then try to pull them out fast. What happens? Take a change surface and roll it between your hands to make a ball. Then wear 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 raise up ketchup to flow is to turn the bottle over and be patient. thunder 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 mixture 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 s lowly, and it will flow around your finger 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.