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Materials - Coggle Diagram
Materials
Common properties of materials
Strength
Weak
Cannot support heaving things well that causes it to break easily
Strong
Can support heavy things with breaking easily
Hardness
Hard
Cannot be compressed
Cannot be scratched
Soft
Can be compressed
Can be scratched
Less hard
Can be scratched easily
Flexibility
Stiff / not flexible
Cannot be bent
Flexible
Can be bent easily without breaking
Density
Floats on water
Low density
Sinks in water
High density
Brittleness
Brittle
Breakis easily when hits or drops
Non-brittle
Does not break easily when hits or drops
Transparency
Transparent
Allows most of the light to pass through
See through
Translucent
Allows some light to pass through
Can see through a bit
Opaque
Allows no lightto pass through
Cannot see through
Waterproof
Waterproof
Does not allow water to pass through
Non-waterproof
Allows water to pass through
Ability to absorb water
Able to absorb water
High absorbency of water
Cannot absorb water
Low absorbency of water
Choosing material in making useful objects
Jacket
To keep us warm in the cold weather
Leather
Light
Strong
Soft
Windscreen of a car
To let the drivers to see the traffic
Glass
Transparent
Waterproof
Hard
Not flexible
Strong
Tyre
To ket bicycles and cars move on the roads smoothly
Rubber
Flexible
Hard
Strong
Waterproof
Rope
To allow us to clim up the wall
Nylon
Flexible
Light
Strong
Durable
Classification of materials
Man-made
Things that are made by humans
Petroleum
Nylon
https://youtu.be/dXJkA0H8K1c?si=8TElhR5V6CbxsLb_
https://youtu.be/BYpfOKwlYS8?si=Aof7Khob2PV46H9X
Plastics
Styrofoam
plastic bag
Natural
Things that exist naturally in nature
Plants
Rubber
From the sap of rubber trees
https://youtu.be/lUg7r7fu_eo?si=K8uO1w6_pjTO-OxH
Wood
From trunks and branches of plants
Cotton
From the fruits of cotton plants
https://youtu.be/QHgNoSYlhYs?si=Hcrf-8HuWEVWF5m3
From the ground
Metals
Iron
Aluminium
Copper
Gold
Rocks
Clay
Sand
Stones
Glass
Sand
Animals
Examples
Leather
Skin
Cows
Snakes
Silk
Silk
Silkworms
https://youtu.be/xJD1grsX0Dw?si=EBoO-Yrbwxr2vNDp
Wool
Fur / Hair
Sheep
Goat
Feathers
Birds
