UNIT 2

UNIT 2

1. a. Raw materials

   • Products extracted directly from nature.
     • Animal origin
     • Plants origin
     • Mineral origin

2. e. Wood and types of wood

   • Non - resinous
   • Resinous

3. h. Wood working tools

   • Cutting tools
   • Shaving and drilling tools
   • Impact tools
   • Assembly tools

4. b. Natural and processed materials

   • A technological product is an object made using materials, designed by humans to meet a specific need.

5. c. The properties of materials

   • Mechanical properties
   • Environmental properties
   • Thermal properties

6. g. Forms of wood

   • Natural wood
   • Prefabricated wood

7. f. Properties of wood

   • Toughness
   • Sound conductivity
   • Splitability
   • Hygroscopicity
   • Hardness
   • Flexibility
   • Density
   • Thermal and electrical insulation

8. d. Tools

   • Objects designed to carry out mechanical work and tasks.