Materials
(3C0)
A basic introduction to materials.
Playing time: 2 min (V638)
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Stone Age axes (3C1)
This links to the Stone Age in history. It shows what real Stone Age hand axes were like from two periods and considers the materials used. Link to technology.
Playing time: 3 min (V639) |
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Finding out about tearing (3C2)
Finding out about the strength and tearing property of a fabric.
Playing time: 9 min (V640)
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How strong is an eggshell? (3C3)
Showing how some shapes are strong and weak at the same time. Eggs are strong in compression (so eggs do not crush when a hen is brooding, but brittle, so weak when a tapping force is applied (such as bird's beak trying to break out of the shell on hatching)
Must-do experiment
Playing time: 3 min (V641) |
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Springy materials (3C4)
Showing some technological uses of elasticity.
Playing time: 4 min (V642)
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Loft insulation (3C7)
Showing how materials can be used to stop conduction of heat.
Playing time: 3 min (V643)
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Insulation roll (3C7)
How loft insulation springs out and plumps up when unrolled so that it can trap air. So the material must be springy.
Playing time: 4 min (V644)
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Looking at cylinders (3C9)
A cylinder is a strong shape, but it can be made strong and the material used reduced by using corrugations. This is an important idea for conservation of the Earth's resources (materials, transport energy and so on).
Playing time: 3 min (V645)
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Soaking up water (3C8)
How capillary action can cause water to be adsorbed - even against gravity.
Playing time: 8 min (V646)
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Weaving (3C10)
How to use weaving to make a strong flexible material.
Playing time: 4 min (V647)
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Extra. Packaging
A look at the way that flat packs can be folded to make strong shapes.
Playing time: 12 min (V648)
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Putting up a modern tent
A look at how properties such as tearing resistance and springiness an be used to make a self-assembly tent.
Playing time: 3 min (V816)
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What is packaging for?
Some thoughts on packaging and whether it is all needed and why different materials are used.
Playing time: 4 min (V650)
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Aluminium
An introduction to aluminium, some of its basic properties, and what we use it for.
Playing time: 3 min (V831)
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Brass
This videos shows objects and parts of objects made of brass.
Playing time: 1 min (V917)
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Bronze
This video shows a bell made of bronze.
Playing time: 1 min (V918)
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Elasticity
This video shows how the elastic properties of rubber can be used to stop a large ship from crashing into the dockside.
Playing time: 2 min (V1055)
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