Chapter 13: Liquids

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Chapter 13: Liquids - Quiz

Questions and Answers
  • 1. 
    Water pressure is greatest against the
    • A. 

      Top of a submerged object.

    • B. 

      Bottom of a submerged object.

    • C. 

      Sides of a submerged object.

    • D. 

      Is the same against all surfaces

    • E. 

      None of these

  • 2. 
    A dam is thicker at the bottom than at the top partly because
    • A. 

      Water is denser at deeper levels.

    • B. 

      Water pressure is greater with increasing depth.

    • C. 

      Surface tension exists only on the surface of liquids.

    • D. 

      It looks better.

    • E. 

      None of these

  • 3. 
    The pressure in a liquid depends on liquid
    • A. 

      Density.

    • B. 

      Depth.

    • C. 

      Both of these

    • D. 

      Neither of these

  • 4. 
    The pressure at the bottom of a jug filled with water does NOT depend on
    • A. 

      The acceleration due to gravity.

    • B. 

      Water density.

    • C. 

      The height of the liquid.

    • D. 

      Surface area of the water.

    • E. 

      None of these

  • 5. 
    One liter of water has a mass of
    • A. 

      1 kilogram.

    • B. 

      14.7 grams.

    • C. 

      500 grams.

    • D. 

      None of the above choices

  • 6. 
    The mass of a cubic meter of water is
    • A. 

      1 kg.

    • B. 

      10 kg.

    • C. 

      100 kg.

    • D. 

      1000 kg.

    • E. 

      9800 N.

  • 7. 
    Pumice is a volcanic rock that floats. Its density is
    • A. 

      Less than the density of water.

    • B. 

      Equal to the density of water.

    • C. 

      More than the density of water.

  • 8. 
    The reason that buoyant force acts upward on a submerged object is that
    • A. 

      It acts in a direction to oppose gravity.

    • B. 

      If it acted downward, nothing would float.

    • C. 

      The weight of fluid displaced reacts with an upward force.

    • D. 

      Upward pressure against the bottom is greater than downward pressure against the top of the submerged object.

  • 9. 
    A completely submerged object always displaces its own
    • A. 

      Volume of fluid.

    • B. 

      Weight of fluid.

    • C. 

      Density of fluid.

    • D. 

      All of these

    • E. 

      None of these

  • 10. 
    A fish normally displaces its own
    • A. 

      Volume of water.

    • B. 

      Weight of water.

    • C. 

      Both of these

    • D. 

      Neither of these

  • 11. 
    Compared to the density of water, the density of a fish is
    • A. 

      More.

    • B. 

      Less.

    • C. 

      The same.

  • 12. 
    What is the buoyant force acting on a 10-ton ship floating in the ocean?
    • A. 

      Less than 10 tons

    • B. 

      10 tons

    • C. 

      More than 10 tons

    • D. 

      Depends on density of sea water

  • 13. 
    What is the weight of water displaced by a 100-ton floating ship?
    • A. 

      Less than 100 tons

    • B. 

      100 tons

    • C. 

      More than 100 tons

    • D. 

      100 cubic meters

    • E. 

      Depends on the ship's shape

  • 14. 
    When an object is partly or wholly immersed in a liquid, it is buoyed up
    • A. 

      By a force equal to its own weight.

    • B. 

      By a force equal to the weight of liquid displaced.

    • C. 

      And floats because of Archimedes principle.

    • D. 

      But nevertheless sinks.

    • E. 

      None of these

  • 15. 
    The buoyant force on an object is least when the object is
    • A. 

      Partly submerged.

    • B. 

      Submerged near the surface.

    • C. 

      Submerged near the bottom.

    • D. 

      None of these

  • 16. 
    The buoyant force on a rock is least when the rock is submerged
    • A. 

      Near the surface.

    • B. 

      Halfway to the bottom.

    • C. 

      Near the bottom.

    • D. 

      Buoyant force does not depend on depth.

  • 17. 
    The reason a life jacket helps you float is
    • A. 

      The jacket makes you weigh less.

    • B. 

      The jacket has the same density as an average human.

    • C. 

      The jacket repels water.

    • D. 

      If you sink, the jacket sinks.

    • E. 

      The density of both you and the jacket together is less than your density alone.

  • 18. 
    Blood pressure is normally greater in your
    • A. 

      Ears.

    • B. 

      Feet.

    • C. 

      Same in each

  • 19. 
    When holes are drilled through the wall of a water tower , water will spurt out the greatest horizontal distance from the hole closest to
    • A. 

      The bottom of the tower.

    • B. 

      The middle of the tower.

    • C. 

      The top of the tower.

    • D. 

      The horizontal distance will be the same for all holes.

  • 20. 
    Lobsters live on the bottom of the ocean. The density of a lobster is
    • A. 

      Greater than the density of sea water.

    • B. 

      Equal to the density of sea water.

    • C. 

      Less than the density of sea water.

  • 21. 
    A lobster crawls onto a bathroom scale submerged at the bottom of the ocean. Compared to its weight above the surface, the lobster will have an apparent weight under water that is
    • A. 

      Greater.

    • B. 

      Less.

    • C. 

      The same.

  • 22. 
    Two life preservers have identical volumes, but one is filled with Styrofoam while the other is filled with sand. When the two life preservers are fully submerged, the buoyant force is greater on the one filled with
    • A. 

      Styrofoam.

    • B. 

      Sand.

    • C. 

      Same on each as long as their volumes are the same

  • 23. 
    The density of a submerged submarine is about the same as the density of
    • A. 

      A crab.

    • B. 

      Iron.

    • C. 

      A floating submarine.

    • D. 

      Water.

    • E. 

      None of these

  • 24. 
    A rock suspended by a string weighs 5 N out of water and 3 N when submerged. What is the buoyant force on the rock?
    • A. 

      8 N

    • B. 

      5 N

    • C. 

      3 N

    • D. 

      2 N

    • E. 

      None of these

  • 25. 
    An egg is placed at the bottom of a bowl filled with water. Salt is slowly added to the water until the egg rises and floats. From this experiment, one concludes
    • A. 

      Calcium in the egg shell is repelled by sodium chloride.

    • B. 

      The density of salt water exceeds the density of egg.

    • C. 

      Buoyant force does not always act upward.

    • D. 

      Buoyant force does not always act upward.

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