I just don’t understand what’s happening to them. Everything I’ve read says the lower external pressure causes the helium inside the balloon to expand. Does this just mean the pressure inside the balloon is rising as if I blew up a balloon to far till it bursts? Why does the balloon expand?
In: Physics
The balloon expands because the density of the air & pressure around the balloon decreases.
Similar how something is compressed the deeper you go in water.
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