As the soap bubble fills, the pressure of the air outside the soap bubble pushes back. This stops the bubble from immediately bursting. If you were blowing bubbles in the vacuum of space or on the Moon which would be pretty hard to begin with , there would be no air to push back on the outside of the soap bubble so it would burst straight away. However, if you were blowing bubbles in the International Space Station, the bubbles may last longer than on Earth.
There is air in the space station but no gravity. As the soap bubble floats on Earth, the soapy water is affected by gravity. It sinks to the bottom of the bubble and the soapy film at the top of the bubble gets thinner and thinner until the bubble bursts. The shape of bubbles is very interesting as well. Soap bubbles form spheres because a sphere has the largest volume of air to the smallest amount of surface area or bubble mix.
A soap bubble will only take a different shape if it is touching something other than air. You could have a look at our videos on how to make a bubble snake , and the shape of the bubble in a washing up bowl.
You could also do some bubble printing. Add them to the comments below. Hayley has an insatiable thirst for learning — about everything! Your email address will not be published. Save my name, email, and website in this browser for the next time I comment.
This site uses Akismet to reduce spam. Learn how your comment data is processed. Bubble mix, pipe cleaners or bubble wands. We simply drop an effervescent tablet into the middle. You can see that the volume expansion is quite significant as chemicals in the tablet baking soda and citric acid dissolve in water and then react to form carbon dioxide gas.
The resultant bubbles inflate the film. Whether you're designing a science experiment or a piece of engineering equipment that is supposed to work in this environment, it's really important to understand what happens to gas in liquid and vice versa. I'm hoping this demonstration will give [designers] some ideas about what might happen to their systems up here and maybe inspire some new experiments.
Image to left: Click on images to view the complete 4 Mb Quicktime movie. The full-length video of his demonstration shows how tiny bubbles swirl hypnotically in a stirred film, how small bubbles combine to form bigger and bigger pockets of gas, and how unwanted bubbles can be removed from gas-contaminated fluids using a syringe. Stay tuned Editor's note: Don Pettit has done similar experiments involving effervescent tablets and spheres of water rather than films of water.
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