Matt - Testing Materials

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Author:
McAuley
ID:
174681
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Matt - Testing Materials
Updated:
2012-10-01 10:33:32
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Physics
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Physics.com
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  1. What are the six terms used to describe a solid?
    • -Brittle
    • -Ductile
    • -Malleable
    • -Hard
    • -Stiff
    • -Tough
  2. What is meant by the term brittle?
    They will break suddenly and shatter without deforming plastically.
  3. What is meant by the term Ductile?
    They can be drawn into wires without losing their strength.
  4. What is meant by the term Malleable?
    They can change shape but they may lose their strength.
  5. What is meant by the term Hard?
    Very resistant to cutting, indentation and abrasion.
  6. What is meant by the term Stiff?
    Have a high resistance to bending and stretching.
  7. What is meant by the term Tough?
    Tough materials are difficult to break.
  8. Name 1 brittle material.
    Glass/ Ceramics.
  9. An example of Ductile material?
    Copper
  10. An example of a malleable material
    Gold/brass
  11. An example of a Hard material.
    Hardened steel and diamond
  12. An example of a Stiff material?
    Metal.
  13. An example of a tough material?
    Polyethene.
  14. Youngs modulus equation?
    E=stress/strain
  15. Stress equation
    Force/Area
  16. Strain equation
    extention/length
  17. What could a hard material be used for?
    Cutting tools
  18. What could a stiff material be used for?
    Safety helmets/tables.
  19. What is a polymer?
    a series of monomers
  20. Hookes Law
    Extension is directly proportional to Force
  21. What is the point in which Hookes Law no longer applies?
    The elastic limit
  22. Name a material which only obeys Hookes Law for very small extensions.
    Rubber
  23. What is elastic deformation?
    a small stress... for example will cause glass to stretch slighty, remove the stress and the glass will then return to its original dimensions.
  24. What is Brittle fracture?
    increase stress too much and the material will break.
  25. Who is the lead singer of Radiohead?
    Thom Yorke
  26. What is plastic deformation
    This is after the elastic limit and when the material yields under the pressure and deforms.
  27. Which is stronger, pure metals or alloys?
    Alloys
  28. Which class of materials is generally the strongest?
    Metals
  29. What is a semi-conductor?
    Tis a conductor with fewer free electrons than a conductor
  30. Name the 3 best conductors
    Silver, Copper, Gold.
  31. How is the scale of resistivity and conductivity set?
    logarithmic scale.
  32. What does Youngs modulus show?
    How brittle a material is
  33. Name a very poor conductor
    Wood/ polystyrene.
  34. What is steel made out of?
    Iron and Nickel
  35. What do you do in the Game of Thrones?
    You win or you die.
  36. What is the opposite of Brittleness?
    Toughness
  37. The ring can only be destroyed in the place it was forged, the fires of Mount Doom.
    One does not simply walk into Mordor. It's black gates are guarded by more than just orcs. The great eye is always watching, an evil that never sleeps. Not with ten thousand men could you do this. It is folly!
  38. What date is it?
    • October 1st....
    • Oh it would seem that...Winter is Coming...soon be cardigan weather.
    •                

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