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Ice Balloons
Have a ball experimenting with a frozen water balloon—and learn about water chemistry, phase changes, and density.
Indicating Electrolysis
Break up water into hydrogen and oxygen gas with a simple electrolysis device, and use an acid-base indicator and a magnet to create groovy swirls of color.
Infrared Remote
Investigate infrared electromagnetic radiation by using your television remote control as a source and a digital camera as a detector.
Inverse-Square Law
We all know that the farther away we get, the dimmer a light will look. The question of how much dimmer it looks was answered a long time ago. Here’s an easy way to repeat that discovery.
Inverted Bottles
Investigate convection by using food coloring and water at different temperatures.
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Attribution: Exploratorium Teacher Institute
