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Materials and machines
Contribució de: Pla
  • 1. Materials can be artificial and man-made
A) true
B) false
  • 2. Natural materials are found in nature
A) False
B) True
  • 3. Elastic, light, transparent, waterproof are...
A) complex machines
B) green materials
C) properties of materials
  • 4. Machines with no or few moving parts are called...
A) complex machines
B) simple machines
  • 5. Examples of complex machines: wheel, pulley, lever and inclined plane.
A) false
B) true
  • 6. An example of green material....
A) versatile
B) aluminium
C) bamboo
D) plastic
  • 7. Bamboo is used for:
A) food,furniture,construction,cloth
B) bulding,cloth,food,steel
C) cloth,furniture, cloth,metals
  • 8. Some machines us_____________
A) wheel
B) work
C) jobs
D) human energy
  • 9. Scissors are
A) complex machine
B) simple machine
  • 10. bicycle are
A) complex machine
B) simple machine
  • 11. Which is the meaning of the word: lever
A) politja
B) pla inclinat
C) palanca
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