The Science of every day items.
As part of National Science Week, we are asking schools to help us explore the science of everday items.
Science is all around us and effects almost every part of our daily lives. Tea bags, pencils, paper, food, drink - virtually anything you can think of has its own science.
As part of this celebration of the ordinary, we would like you to nominate an object for inclusion in our "Sphere of Science".
Guidelines for resin casts of everyday items.
Items and their explanations will be placed in a circular mould 20cm in diameter. Casting resin will then be poured in to approx 2cm thick. These will be displayed outdoors in the observatory gardens.
Items should be non perishable. For example, if your item was a mug, this would be fixed approx 1cm in to the resin with part of the mug protruding. This is not an issue. However, if the item was a loaf of bread, you might consider using a slice so it is completely cast in resin.
Template for explanation.
Please add your school and class name as well as a brief description of the science behind your item. This could include the mathematics behind it, materials used, or engineering techniques.
For example.
A teabag.
Pyramid, square or circular?
Diffusion: the movement of a substance from an area of high concentration to an area of low concentration. There are lots of tea molecules in the bag and none outside. The leaves themselves can’t pass through the bag but their smaller particles containing colour and flavour can. The pyramid shaped teabag allows a larger surface area for the flavour and colour to diffuse. The addition of heat (from the hot water) to the tea bag causes its molecules to move much faster than at room temperature. This energy is more readily released in a shorter period of time than a tea bag filled with room temperature or cold water.
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