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Vast collection of podcasts, videos and explanations for real-world fun science. Excellent for discussion, predictions etc

In the last physics lesson, the teacher seemed to have to explain the Doppler effect for quite a long time to some people before they understood it. So, being the nice, considerate, thoughtful person I am, I decided out of the goodness of my golden heart to explain the Doppler effect for future reference using animation (actually, I thought it would be a fun thing to do anyway). For those of you who are confused about what the Doppler effect has to do with anything, it's red shift and blue shift. So it is relevant to the lesson.

Fun, interactive, research-based simulations of physical phenomena from the PhET project 

Egg geode experiment: growing crystals in egg shells

Fun and great graphics

Stimulus video to ask students to dramatise inertia etc. Corny but funny!

"http://yt.cl.nr/xH8mT2IQz7Y" It's a video about sound. A science song about sound. Also there's a bit about the five senses.

"http://yt.cl.nr/Whd4EIGJbU0" Watch as liquid nitrogen instantly transforms a standard sugar and cream mixture into ice cream -- without any measurable time elapsing.