Chapter 12: Solids

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Chapter 12: Solids

When a chocolate bar is cut in half, its density is


Questions and Answers
  • 1. 
    Compared to a bar of pure gold, the density of a pure gold ring is
    • A. 

      Less.

    • B. 

      The same.

    • C. 

      Slightly more.

    • D. 

      Much more.

  • 2. 
    Which has the greater density, a lake full of water or a cup full of lake water?
    • A. 

      The cup full of lake water

    • B. 

      The lake full of lake water

    • C. 

      Both have the same density.

    • D. 

      It is impossible to tell without knowing the size of the lake.

  • 3. 
    Compared to the density of a kilogram of feathers, the density of a kilogram of lead is
    • A. 

      Less.

    • B. 

      More.

    • C. 

      The same.

  • 4. 
    If a loaf of bread is compressed, its
    • A. 

      Surface tension becomes less.

    • B. 

      Molecules become harder.

    • C. 

      Density decreases.

    • D. 

      Density increases.

    • E. 

      None of these

  • 5. 
    If the mass of an object were to double while its volume remains the same, its density would
    • A. 

      Halve.

    • B. 

      Double.

    • C. 

      Stay the same.

    • D. 

      Become four times as great.

  • 6. 
    If the volume of an object were to double while its mass stays the same, its density would
    • A. 

      Halve.

    • B. 

      Double.

    • C. 

      Stay the same.

    • D. 

      Become four times as great.

  • 7. 
    When weight is applied to the top of a stone arch, all of the stone blocks in the arch undergo
    • A. 

      Tension.

    • B. 

      Compression.

    • C. 

      Expansion.

    • D. 

      Change of phase.

  • 8. 
    When a chocolate bar is cut in half, its density is
    • A. 

      Halved.

    • B. 

      Unchanged.

    • C. 

      Doubled.

  • 9. 
    When a load is placed on the middle of a horizontal beam supported at each end, the bottom part of the beam undergoes
    • A. 

      Tension.

    • B. 

      Compression.

  • 10. 
    You wish to bolt a sign to a horizontal I-beam supporting a bridge. You will weaken the beam least if you drill the bolt-holes through the
    • A. 

      Upper flange.

    • B. 

      Lower flange.

    • C. 

      Web.

    • D. 

      All these will have the same effect.

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