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A brief justification for SETI

A not very good copy of a Nasa education video about balancing the Earth's energy budget

Short film showing how earthquakes originate at plate boundaries.

Short animation showing how to measure the focal length of a lens

A short video about Galileo's first use of a telescope

A short, informative, but slightly annoying video with good visuals of the two models

Al Gore giving a short talk about Global Warming

Short video (9.58 min) starting with Herschel's discovery and then looking at infrared in more detail. The last 3 mins are basically a sales pitch but the infrared images are interesting

What happens if you touch the live wire

A nice romp through the history of the Universe

Second part including the life cycle of the sun

Short film showing what will happen to the Earth and the impact of a red giant on the inner planets

Very simple, short (2.08), video telling a silly story to help remember the order of the electromagnetic spectrum. I particularly like the nmemonic at the end

Great visual but really needs a voiceover

High school project. Well explained

Simple, clear animation showing a longitudinal wave

Brief video explaining how the Herschel space telescope is using infrared radiation to look out into space. IR doesn't pass through the Earth's atmosphere so the telescope has to be outside of the atmosphere

Short film with excellent animation of the role of convection currents in the mantle in the movement of tectonic plates.

Starting with Ritter's experiment with photographic paper, this short video (3.40) goes on to look at UV-A, UV-B and UV-C before going on to briefly descrive their use in space exploration

Very short clip showing how s and p waves move through the Earth.

SETI - Search for Extra Terrestrial Intelligence

Explanation of how sonar is being used to map the sea floor in the caribbean.

Short video (3.23). Looking in a bit more depth at microwave radiation. Includes CMB

Short video (5.20). Introduction to the electromagnetic spectrum with a look at each of the wavelengths in turn.

Short video (3.58). Looking in a bit more depth at radio waves from their first transmission at the end of the 19th Century.

Very short video showing longitudinal waves and transverse waves in a slinky

Short nature film showing how ultrasound is useful to bottlenose dolphins

Nice explanation of how ultrasound works