I know...I know...I said that nearly all bubbles are spherical. Nearly all of them are but not this one. In this experiment we’ll be making a square bubble! What do I need? Washing up liquid and water Bucket or large container 8 pipe cleaners 12 Straws Scissors – First thing is to make our square bubble maker. Take a pipe cleaner and bend and twist it round to make a ‘corner shape’ as shown. STEP1
WARNING: Make sure that you don’t make your square bubble maker too big, make sure it can fit in your bucket!
– Get an adult to help out chopping all of your straws in half. STEP2 – Slide your ‘half straws’ over your pipe cleaner ‘corner shape’ to make one corner of your cube. STEP3 – Repeat this process to build out your straw cube framework. STEP4 – Submerge your bubbler-maker into your bubble mixture. Lift it out and give it a little shake and you should see a wondrous site, a square bubble! STEP5 What’s going on?
Doesn’t look like it’s possible, does it? Looks sort of mystical and out of this world but it’s actually all to do with pressure.
A bubble film forms between each of the sides of the cube framework. This means that you can have a square bubble in the centre where the pressure is close enough to equal to make it work.
More Fun Please! Try not to play with your bubble for too long!? Would other shapes be possible? Could you make a triangle bubble? Try using a straw to blow a ‘normal’ bubble inside the square bubble, why does that work?