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4 MATERIALS - Coggle Diagram

- - - - furniture, floors , paper, wall panelling.
  - - - structural components, machine parts, tools
  - - - tubing, packaging, toys, containers, outer covering of electrical cables
  - - - thread for making textiles with different uses
  - - - construction materials and decorative objects and sculpture
  - - - construction, paltes and bowls, sinks and decorative objects
- - - - some materials conduct electricity
    - - Some materials don't conduct electricity
  - - - Thermal conductors are materials tha tconduct heat.
      - Thermal insulators are material that don't conduct heat.
    - - When the temperature increases, the materials expands. When the temperature decreases, the material expands.
    - - Some materials change from solid to liquid when their temperature is increased
    - - Some materials can be used to weld two pieces of the same or different materials together.
  - - - The capacity of materials to transmit sound.
    - - The capacity of materials to transmit sound.
- - - - Some materials allow water or other liquids to filter through
        them.
    - - Some materials don't allow water or other liquids to filter
        through them
- - - - wood cut into flat boards of varying size and thickness.
- - - - recyclable materials
        
        These can be reused. They help
        conserve natural resources and
        avoid the accumulation of waste
        products.
      - toxic materials
        
        These are harmful to the
        environment. They can be
        poisonous for living things
        because they contaminate the soil,
        the water and the atmosphere.
      - biodegradable materials
        
        These are materials that
        decompose naturally and don't
        cause damage to the environment
- - - - Other objects can't be seen
        through them.
    - - These allow light to pass through
        them, but don't allow objects
        behind them to be seen clearly
    - - Other objects can clearly be seen
        through these materials.
  - - - The mechanical strength of materials depends on the type of force that acts upon them.
    - - Elasticity allows the material to return to its original form
        after a force that has changed its shape is removed.
      - Plasticity allows it to be permanently deformed.
    - - Malleability allows a material to be spread into sheets or films. Materials with this property are malleable.
      - Ductility allows a material to be formed into filaments, or wires. Materials with this property are ductile.