Tenacity

 TENACITY

Tenacity: It’s the capacity of absorbing energy when a material it’s hit or deformed.

An example of a sostenible material its glass



( video)

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Elasticity

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  ELASTICITY :   Elasticy: Property that bodies have of changing their shape when an adequate force is applied to them and of recovering their original shape when the action of the force is suspended. An example of an elastic sostenible material its cotton. Elasticity has a limit, if it is exceeded the body suffers permanent deformation or breaks ( video )
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Egg experiment

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  BRAINSTORMING - Use a prachute made of clothing to decrise the impact - Use cardboard box to to protect the egg -Use wet clay to make a shell for the egg FINAL IDEA - Use wet paper to make a shell for the egg, stale food to protect the egg and and finally put the egg in a box with popcorn to decrise the impact.   EXEL VIDEO
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Hardness

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HARDNESS: Property of material by which they are difficult to compress or scratch is called hardness. For example, iron and copper are hard materials. Bamboo its an example of a hard and sostenible material What's Hardness? (video) Mohs scale:
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