Please enable JavaScript.
Coggle requires JavaScript to display documents.
Materials, Common properties of materials, Choosing materials in useful…
Materials
Classification of materials
Natural
Sources of materials
Animals
Example
Wool
Leather
Silk
Feathers
Plants
Example
Wood
Rubber
From the ground
Example
Glass
Metals
Rocks
Man-made
Sources of materials
Petroleum
Nylon
Plastics
Common properties of materials
Properties
Hardness
Hard or soft
Hard or less hard
Strength
Strong or weak
Flexibility
Flexible or stiff
Density
Floats or sinks
Brittleness
Brittle or non brittle
Transparency
Transparent or opaque
Waterproof
Waterproof or non-waterproof
Absorbency
Able to absorb water or cannot absorb water
Choosing materials in useful objects
Need to consider
The usage of the objects
Properties of materials in making them
Example
Windscreen
Tyre
Rope
Jacket