Why are soap bubbles spherical, and what does it take to create a different shape?
Subjects: Physics
-
Will It Float?
Why will diet pop float and regular won’t? And how can a microwave help us understand the mystical floating ability of Ivory® soap?
-
Bubbles Under Pressure
What causes bubbles to form in carbonated beverages? Obviously it’s carbon dioxide, but why do bubbles form rapidly (or even explosively!) sometimes, while other times the bubbles are under control?
-
The Amazing Flowing/Non-flowing Fluid!
Cornstarch and water combine to make a marvellous substance that looks like runny goo until you apply pressure to it, at which point it turns stiff like bread dough. It’s a non-Newtonian vicsoelastic fluid!
-
The Amazing Dipping Duck
Explore what makes the dipping duck dip, and what it can tell us about the weather!
-
Build a Carbon Microphone
A box and a piece of carbon will get you started on creating a working microphone!
-
Making a Crystal Radio
It’s a flashback to the fifties, as we tune in local AM radio stations with our home-built, battery-free crystal radio.
-
Striking Gold!
Learn about the properties of the remarkable metal by panning for gold and plating gold onto metallic objects.