95 results found for 11-14-year-olds

Bill takes apart a cheap watch to show how it works. He describes how a tiny quartz tuning fork keeps the time.

Bill introduces queueing theory and uses it to design the most efficient check out line

They're awesome to have in the kitchen, but did you ever wonder how your microwave actually works? This is a quick introduction to the theory that makes our home microwave ovens possible. Here, Daniel covers the differences between microwave heati....

With portrait painter Peter Edwards, Sir Harry Kroto discusses his love of art and science.

When two different metals are placed in a salt solution (an electrolyte) the chemistry produces a voltage. This is called a cell. By wiring up a number of these cells we can make a battery and use it to power electrical circuits.

Separating colours by science

An introduction to acids and bases using simple kitchen equipment and some 'invisible ink'.

This is a simple yet effective demonstration of electricity generation. 500 turns of wire are wound onto a 35mm film can and the two ends are attached to an LED light. A strong magnet is placed in the can and the lid fixed back in place. The generato....

Be wary of high interest rates! An introduction to how loans grow.

With some simple circuitry and a homemade hand powered generator Jonathan makes AC and DC electricity that could be used for charging a mobile phone or attaching to a wind turbine.

A short video on solar cells explaining with accompanying information sheet. How they work and how Jonathan uses solar power at home.

Sophie and Stephanie take a light-hearted look at solar energy.