How to teach science, the way primary kids love
Why Does This Happen?
Bubble films are stretchy... scientists call this 'stretch' surface tension. As bubbles are stretchy, they always try to shrink into a sphere shape, minimising surface area.
Dipping the frame into the bubble mix traps air inside the frame. The bubble inside the frame tries to form a sphere but the bubble films connecting to the frames pull on the bubble on the inside. This creates a bubble with the same shape as the frame.
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