When the drag force overcomes the weight of the teabag, the teabag lifts off! Official 4th of July love my veteran shirt by tshirtat store! Some simple physics in this elegant experiment. First, pick up the remote. Point it at your face and press a button. Unless you are superhuman, you should notice no difference in the black nub/lightbulb looking thing on the front. The reason this is that the bulb is lighting up in the infrared spectrum, which your eyes cannot see. However the camera on the phone can see those wavelengths, and through some computer, magic can convert it into visible light coming out of your screen. Mentos in a coke bottle, disappearing ink, and levitating magnets are all popular examples. Show your child something unexpected and then explain the scientific principle behind the phenomenon. But this a great way to motivate an interest in science overall, especially for young children.
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Take a glass bottle and add some water. Put the bottle on the stove and get the water to boiling Official 4th of July love my veteran shirt by tshirtat store. When the water is boiling, quickly dump it out and put a balloon on the bottle. The air pressure from the atmosphere will push the balloon into the bottle, “blowing it up” inside out. When the water boils, turn the can upside down into a pan of cold water, sealing the drinking hole of the can. Atmospheric pressure instantly crushes the can. Light a piece of paper and drop it into a glass bottle. Let it burn for a short time, and then place a hard-boiled (peeled) egg on the bottle opening. Air pressure will push the egg into the bottle. Sucking a hard-boiled egg into a glass bottle is one of the cooler experiments a kid can do. Fire and gross egg packages give you a cheap and repeatable win.