Audacityphysics [licensed for non-commercial use only] / Audacity Physics Homepage. Tricks (ABC Science) Tricks Blow underwater bubble rings Everybody loves bubbles and we're all mystified by the swirls of a vortex. Combine the two and you've got yourself the coolest trick under the sea. Banana 'candle' trick This classic prank will appeal to anyone with a penchant for plantains but don't be fooled! Explore more Tricks Dry footprints on wet sand Why do your footprints look dry when you step on wet sand? Salt experiment How and why does water mix in our oceans? Cloud in a bottle Pump a soft drink bottle full of air, pop the top and bam! Doppler effect Swing a ringing phone inside a long sturdy sock and you will hear the strangely familiar Doppler effect.
Swipe card experiment Sprinkle some iron filings on an old swipe card and pretty magnetic patterns appear right before your eyes. Unmixing experiment Can you unmix a mixed-up liquid? Coin experiment Master this impossible looking trick and you'll feel like a ninja Jedi master of the ever-expanding universe... or your money back! Fountain experiment. Browse secondary resources - BP Educational Service (BPES) KS3 Materials - Educators. The List of Experiments by Tim Hunkin.