By Eugene F. Provenzo Jr., Asterie Baker Provenzo
Simple yet stress-free experiments, played with universal home items, educate young ones rules of sunshine, elasticity, viewpoint, gravity, air strain, optics, extra. directions, illustrations.
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Extra resources for 47 Easy-to-Do Classic Science Experiments
If the dowel is too loose, wrap a piece of tape around it in order to give you a tight fit. The top should look something like this. Using the compasses, draw a circle four inches in diameter on the cardboard. Also draw a circle the same size on each different piece of colored paper that you have. Punch or cut a hole in the center of each circle. Cut a slit from the edge to the center of each colored disk. Glue the cardboard circle to the top of the spool. When the glue has dried you can slide the disks on top of the spindle.
Air pressure: Pressure caused by the weight of the air at the top of the atmosphere as it presses down upon the air beneath it. WHAT WILL BE DISCOVERED Because, like all moving gases, the air in the jet stream is at a lower pressure than the still air around it, the surrounding air will push the pea back in position when it tries to escape. If the pea is dry, soak it in water to soften it so that you can push the pin through its center without splitting it. Push the straight pin through the center of the pea.
Fill a second glass of water. Cover the second glass of water with a piece of paper and then invert the glass. Place the second glass on top of the first. Be sure that the rim of the second glass fits exactly on the rim of the first glass. Then lift the second glass just enough to slip out the piece of paper. Again, air pressure will hold the water in the inverted glass, sitting on top of the first glass, without spilling a drop. ) Magdeburg Sphere One of the most important experiments in air pressure was performed around 1650 by Otto von Guericke (1602-1686), the mayor of Magdeburg, Germany, and a scientist.