Rrhs Material Science I Assessment

50 Questions | Total Attempts: 127

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Rrhs Material Science I Assessment

Material Science I -- Semester Final: Safety-Metals-Glass & Ceramics (Raku) This is an assessment of how much you remember about all the fun stuff we did, and what did you learn in Material Science the last few months.


Questions and Answers
  • 1. 
    Think back to "The Secrets of the Samurai Sword". What was alloyed with the iron to create steel?
    • A. 

      Ferrous Oxide

    • B. 

      Carbon

    • C. 

      Bauxite

    • D. 

      Tin

  • 2. 
    What allowed the Samurai sword to maintain it's tough sharp edge, and yet not break from striking it's intended target?
    • A. 

      Low carbon steel exterior surface wrapped around a high carbon steel interior.

    • B. 

      High carbon steel exterior surface wrapped around a low carbon steel interior.

    • C. 

      Mild carbon steel exterior surface wrapped around a high carbon steel interior.

    • D. 

      Stainless steel exterior surface wrapped around a high carbon steel interior.

  • 3. 
    If a material is described as being "Non-Newtonian", overall, what does that mean?
    • A. 

      That if you add energy (shear force) it will make a liquid thicker or more rigid or more viscous. Examples: oobleck (cornstarch-water mixture), liquid body armor

    • B. 

      The material or substance does not follow the laws of physics as described by Newton.

    • C. 

      Adding energy (shear force) makes a solid thinner or causes it to liquefy - less viscous. Examples: catsup, concrete, some paint, printer's ink

    • D. 

      It has a resistance or opposition to flowing as a liquid.

  • 4. 
    If a material is said to be "Dilatant", what does that tell us about the material?
    • A. 

      Adding energy (shear force) makes a solid thinner or causes it to liquefy - less viscous Examples: catsup, concrete, some paint, printer's ink

    • B. 

      Does not follow the laws of physics as described by Newton

    • C. 

      Adding energy (Shear force) makes a liquid thicker or more rigid -more viscous Examples: oobleck (cornstarch - water mixture), liquid body armor

    • D. 

      It has a resistance or opposition to the flowing as a liquid.

  • 5. 
    If a liquid material is said to be "Thixotropic", what does that tell us?
    • A. 

      It has a resistance or opposition to flowing as a liquid.

    • B. 

      Adding energy (shear force) makes a liquid thicker or more rigid - more viscous Examples: oobleck (cornstarch - water mixture), liquid body armor

    • C. 

      Does not follow the laws of physics as described by Newton

    • D. 

      Adding energy (shear force) makes a solid thinner or causes it to liquefy - less viscous Examples: catsup, concrete, some paint, printer's ink

  • 6. 
    The definition of Viscosity is:
    • A. 

      The hotter it gets the thinner it gets

    • B. 

      The rate of resistance or opposition to the flow of a liquid.

    • C. 

      The cooler it gets the thinner it gets

    • D. 

      The cooler it gets the thicker it gets.

  • 7. 
    When working around chemicals, the preferred Personal Protective Equipment (PPE) to protect your eyes would be:
    • A. 

      Your sunglasses at night.

    • B. 

      Safety glasses

    • C. 

      Clear safety goggles

    • D. 

      Welding helmet

  • 8. 
    This type of glove is normally the appropriate PPE when doing experiments with chemicals in the class room.
    • A. 

      Nitrile disposable gloves

    • B. 

      Cotton gloves

    • C. 

      Leather gloves

    • D. 

      Mittens

  • 9. 
    If you are working with clear liquids in a test tube or other container, lose track, and are trying to distinquish which is which, the appropriate procedure would be to:
    • A. 

      Pour small amounts onto a cookie sheet, light the fluid and observe the color and intensity of the flame.

    • B. 

      Do a spark test with a flint rock.

    • C. 

      Hold the container down and pointed away from your nose and lightly "waft" or fan your hand to quickly smell any fumes gassing off, without inhaling. Alcohol, laquer thinner, acetone, all smell different.

    • D. 

      Dump them all down the drain and walk away.

  • 10. 
    Someone has left an extension cord across the walk way between the tables, and you see a student heading that direction. You should:
    • A. 

      You should wait for them to get closer, and jerk the end of the cord tripping them. That will teach them to watch where they are going!

    • B. 

      You should warn them so they don't trip, and then reposition or put the cord away so it is no longer in the walk way.

    • C. 

      You should get up, go ask your teacher to find and tell whoever used it last and left it, to come back and put it away.

    • D. 

      Do nothing. It's not your problem, and you have no responsibilty to make sure that yourself and others are always safe.

  • 11. 
    In our classroom and shop we have 3 fire extinguishers. They are classified as this type of a fire extinquisher.
    • A. 

      ABCD

    • B. 

      OMG

    • C. 

      MSG

    • D. 

      ABC

  • 12. 
    This type of fire is the combustion of Wood/Paper/Trash
    • A. 

      D

    • B. 

      A

    • C. 

      B

    • D. 

      C

  • 13. 
    This type of fire extinguisher, which we do not have in our class or shop, is for combustible metals fires:
    • A. 

      A

    • B. 

      C

    • C. 

      D

    • D. 

      B

  • 14. 
    A fire that has flammable liquids, grease, or oil as it's combustion source would be this type of fire:
    • A. 

      B

    • B. 

      D

    • C. 

      C

    • D. 

      F

  • 15. 
    An electrical fire is classified as a Type _______ fire:
    • A. 

      A

    • B. 

      E

    • C. 

      B

    • D. 

      C

  • 16. 
    One should never put water on these types of fires:
    • A. 

      Grease fire on your stove

    • B. 

      gas fire on engine

    • C. 

      A fire in your toaster

    • D. 

      A fire in your microwave

    • E. 

      All of the above

  • 17. 
    It is important to use the fume hood if doing experiments that may create:
    • A. 

      Fumes

    • B. 

      Small amounts of smoke

    • C. 

      Smells

    • D. 

      All of the above

  • 18. 
    When we worked with a thick piece of copper wire, and pulled it through a die to make it thinner and longer, the property of the copper we were exploring was:
    • A. 

      Petina

    • B. 

      Ductility

    • C. 

      Oxidation

    • D. 

      Malleability

  • 19. 
    When we worked with copper wire and attempted to bend it and straighten it and bend it and straighten it, the property being explored was:
    • A. 

      Malleability

    • B. 

      Annealing

    • C. 

      Ductility

    • D. 

      Work hardening

  • 20. 
    When we were working with the copper wire, we also placed it on an anvil (the back of a shop vise) and hammered on it with a Ball Peen Hammer. What metal properties were we exploring while doing this lab?
    • A. 

      Stength and durability

    • B. 

      Malleability and work hardening

    • C. 

      Ductility and tempering

    • D. 

      Sintering and bonding

  • 21. 
    In the material world, when we are examing the crystal structures and the differences between the same metal that has had different processes applied to it to obtain different desired properties, we learned that High carbon steel, for example, has a durable very hard surface. This is because of where the carbon ended up in the molecular structure of the alloy of Iron and Carbon that makes the steel. This crystal structure is called:
    • A. 

      BCC (Body Centered Carbon)

    • B. 

      FCC (Face Carbon Cover)

    • C. 

      BCC (Body Centered Cubic)

    • D. 

      FCC (Face Centered Cubic)

  • 22. 
    Low carbon steel allows for more flexibity in the material before it will stress to a breaking point. Low carbon steel acted as the "shock absorber" in the Samurai Sword, which kept the impact from the high carbon exterior of the sword, from transmitting shock waves throughout the sword and possibly causing it to break or shatter. It is the molecular structure of the crystals that enables the sword to have the tough hard outer shell that maintains the sharp edge, while at the same time being durable. This atomic/molecular structure is referred to as:
    • A. 

      FCC (Fast Cutting Carbon)

    • B. 

      FCC (Face Centered Cubic)

    • C. 

      BCC (Body Centered Cubic)

    • D. 

      BCC (Back Centered Cubic)

  • 23. 
    Back when they used to build ships out of wood and sail the seven seas, they covered the bottom of the hulls with a material that killed organisms that tried to grow their causing damage and rot. This material was:
    • A. 

      Zinc

    • B. 

      Ferrous Oxide

    • C. 

      Silver Nitrate

    • D. 

      Copper

  • 24. 
    Some metals are considered antimicrobial becasue they inhibit the growth of living organisms, such as barnacles, moss, fungus, or bacteria.
    • A. 

      Silver

    • B. 

      Copper

    • C. 

      Zinc

    • D. 

      All of the above

    • E. 

      None of the above

    • F. 

      Copper Only

  • 25. 
    "Fe" on the periodic table is the Chemical Symbol for _____________.
    • A. 

      Flourine

    • B. 

      Iron

    • C. 

      Francium

    • D. 

      Fermium