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A fuzzy-colored dot that has no distinct edges seems to disappear. As you stare at the dot, its color appears to blend with the colors surrounding it.
Prove to yourself that Galileo was right—in a vacuum, two different weights will fall at the same acceleration.
Calculate the acceleration of gravity using simple materials, a cell phone, and a computer to record, watch, and analyze the motion of a dropped object.
Space weights along a string so they make a regular rhythm of beats when they strike the ground.
Build a low-friction cart and explore Newton’s third law.
At first glance you might see a bunch of boxes here, but, in fact, there are no boxes at all. A closer look reveals you're looking at a cluster of corners lit from below.
Feel changes in atmospheric pressure by stepping into an extra large garbage bag—a breathtaking experience.
Infuse vegetables with a tasty brine—instantly—using a syringe.
Gazing at a blue sky, you may see shapes drifting through your field of view—blobs and squiggles called floaters. Why do they jump away when you try to get a better look?
By experimenting with positive and negative charges, you can suspend tinsel in the air. (No need to reveal it's just electrostatic repulsion.)
In the atmosphere, clouds usually form when moist air cools as it rises to higher altitudes. You can create the same effect by rapidly expanding the air in a jar.
Model the carbon cycle and its principal reservoirs and flow rates using rice.
Lightning bolts, river deltas, tree branches, and coastlines are all examples of patterns in nature called fractals. In this Snack you get a striking hands-on introduction to fractal patterns and how they are formed.
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Attribution: Exploratorium Teacher Institute
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