TECHNOLOGY UNIT 2

TECHNOLOGY UNIT 2

1. TECHNICAL MATERIALS

   • RAW MATERIALS
     • NATURAL MATERIAL
       • PROCESSED MATERIALS
         • METALS
           • METALS
           • ALLOYS
         • TEXTILES
           • NATURAL
           • PROCESSED
         • WOODS
           • NATURALS
           • DERIVATES
         • PLASTICS
           • NATURAL
           • PROCESSED
         • CONSTRUCTION MATERIALS
           • NATURAL
           • PROCESSED

2. CHOOSING MATERIALS

   • ESPECIFIC PROPERTIES: DIFFERENT MATERIALS
     • SENSORY PROPERTIES
       • FEEL
       • COLOUR
       • TEXTURE
       • BRIGHTNESS
       • TRANSPARENCY
     • MECHANICAL PROPERTIES
       • HARD
         • SOFT
       • TOUGH
         • BRITTLE
       • ELASTIC
         • DUCTILE

3. WOOD

   • OBTAIN:
     • 1.- FELLING
       • 2.- DEBARKING
         • 3.- TRANSPORT
           • 4.- SAWING
             • 5.- DRYING
               • 6.- CLEANING, PLANING, SANDING
                 • 7.- TREATMENTS
   • TYPES
     • SOFTWOODS
     • HARDWOODS
   • DERIVATIVES
     • PLYWOOD
     • CHIPBOARD
     • PAPER
     • CORK
     • CARDBOARD

4. METALS

   • NON-FERROUS
     • TIN
     • ALUMINIUM
     • COPPER
     • ZINC
   • FERROUS
     • IRON
     • STEEL
     • CAST IRON