TECHNOLOGY

TECHNOLOGY

1. TECHNICAL MATERIALS

   • Raw material
     • Serveces to obtain
       • Natural materials
         • Wool
         • Wood
   • Natural material
     • Serveces to obtain
       • Processed materials
         • Plastic
         • Paper
   • Processed material
     • Clasification
       • Woods
       • Metals
       • Textiles
       • Plastics
       • Construction materials

2. Choosing materials

   • If I want to build a ...
     • Bridge
       • I need a strog material
     • Sculpture
       • I need an attractive material
     • Toy
       • I need a non-toxic material
     • Aeroplane
       • I need a lightweight material
   • Basics properties
     • Sensory properties
       • Transparency
       • Brightness
       • Texture
       • Feel
       • Colour
     • Mechanical properties
       • Hard
         • Soft
       • Ductile
       • Tough
         • Brittle
       • Elastic
         • Plastic
       • Malleable
     • Physical properties
       • Conductors
         • Electrical conductor
         • Thermal conductor
         • Sound conductor
       • Insulator
         • Thermal insulator
         • Sound insulator
         • Electrical insulator

3. Wood

   • How we obtain wood
     • Felling
       • Debarking
         • Transport to the sawmill
           • Sawing for end use
             • Drying
               • Cleaning, planing and sanding
                 • Treatments and finishes
   • Types of wood
     • Softwoods
     • Hardwoods
   • Wood products
     • Chipboard
     • Paper
     • Cork
     • Cardboard
     • Plywood

4. Metals

   • Classifying metals
     • Ferroues metals
       • Iron
       • Steel
       • Cast iron
     • Non-ferrous metals
       • Aluminium
       • Zinc
       • Cooper
       • Tin