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# science

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## one direction lover!

on 4 January 2013

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#### Transcript of science

By Polly Lakusta and Ava Mahoney! In this unit you will learn how to use units for mass and force. identifying and measure forces and loads.
-identify examples of fictional forces and their use in structures. , friction of a nail driven into wood

Tension: The pressure or force exerted by an object onto another object.
Compression: The fce oorf compacting one thing into or connecting another.
Shearing: a fabricating process to cut or rip an object. Ex: To rip a peice of paper in half. STRENGTH

Strength is an ability of an object to sustain itself despite the forces being applied to it. Without it bending, breaking, shattering or deforming in any way, it can be named " strong".

the ‘strength’ of a material can be demonstrated by standing on a strong piece of timber. If It does not break even under its weight, nor does it bend, flex or deform (change shape) in any way, it is probably quite strong. ELASTICITY

Is the ability of an object to absorb pressure + flex in different directions, then return to its original position.
The ‘elasticity’ of a material can be demonstrated by springing up and down on a piece of steel rod. Thank you for watching!! You will identify fictional resourses and here are some
of the examples: television sitcoms, movies, novels, and short stories. Frictional forces- Examples of frictional forces are: STRENGTH
The ability of a material to stand up to forces being applied without it bending, breaking, shattering or deforming in any way. Our technology technician (Ed) demonstrates the ‘strength’ of a material by performing a hand stand on a strong piece of timber (wood). It does not bend even under his weight. He has eaten pies and drunk a large amount of beer for twenty years and yet the strong material does not bend, flex or deform (change shape) in any way. ELASTICITY
The ability of a material to absorb force and flex in different directions, returning to its original position.Our technology technician demonstrates the ‘elasticity’ of a material by springing up and down on a piece of steel rod. Do not try this at home as an accident may result. Ed our technician is an expert at demonstrating this property as it is his hobby. PLASTICITY
The ability of a material to be change in shape permanently. Our technology technician and his twin brother demonstrate the ‘plasticity’ of a molten aluminium by pouring it into a mould. Once the aluminium has cooled down, it can be removed from the casting sand. It has a new shape.Our technician is often seen scavenging in dust bins after aluminum drinks cans. He then melts them down to form blocks (ingots) of aluminium to sell to scrap metal dealers.
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