From outer space threats to dangerous dino drama — from super-powered action to robotic horror — and from mega-budget ...

This amplifies the higher frequencies in your voice. The gas sulfur hexafluoride works in the opposite way. The following is a transcript of the video. It’s a classic party trick- suck down a ...

Searching online will allow you to find clips of model boats made from aluminium foil floating in a tank full of sulfur hexafluoride. This clip will be relevant for teaching KS3 and GCSE Physics.