WOOD

WOOD

1. Raw material are products extracted directly from nature.

2. Natural and processed materials

   • industrial precesses are applied to raw materials, also kwon as natural resources, to turn them into processed materials.

3. The propierties of materials describe their qualities, which determine heir behavior when subjeted to external forces.

4. tools

   • For many centuries, humans used their hands as tools, unti their brains ability for abstract thought inspired them touse sticks and stones to make their actions more effective.

5. types of wood

   • non-resinous
   • resinous

6. propierties of wood

   • hardness
   • thermal and electrical insulation
   • flexibility
   • density
   • hygroscopicity
   • sound conductivity
   • splitabilityy
   • toughness

7. forms of wood

   • strips
   • mouldings or profiles
   • beams
   • panels
   • sheets or veneers

8. tools made of wood

   • basic hand saws
   • hacksaws
   • hammers
   • mallets

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