Quiz 9: Hydrostatics

10 Questions | Total Attempts: 189

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Hydrostatics Quizzes & Trivia

You may take this quiz up to 3 times; I will keep your highest score. The quiz is open through Sunday, 11/20.


Questions and Answers
  • 1. 
    If the distance between two objects is doubled, what happens to the force of gravitational attraction between them?
    • A. 

      It stays the same

    • B. 

      It is cut in half

    • C. 

      It doubles

    • D. 

      It is 1/4 as strong

  • 2. 
    When calculating the force of gravity between two objects, you need to measure the distance between:
    • A. 

      The centers of mass of the two objects

    • B. 

      The points where the objects surfaces are closest to each other

    • C. 

      The points where the objects surfaces are farthest away from each other

    • D. 

      Two arbitrary points within the objects' mass

  • 3. 
    According to Keler, the path of a planet's orbit is in the shape of _____________.
    • A. 

      A circle, with the sun at the center

    • B. 

      An ellipse, with the sun at one of the foci

    • C. 

      A circle, with the earth at the center

    • D. 

      An ellipse, with the earth at one of the foci

  • 4. 
    When playing billiards, the collisions between the balls are best described as __________________.
    • A. 

      Elastic

    • B. 

      Inelastic

    • C. 

      Expensive

    • D. 

      Exhaustive

  • 5. 
    The kinetic energy of an object will increase the most if you __________________.
    • A. 

      Double the velocity of the object

    • B. 

      Double the mass of the object

    • C. 

      Double the potential energy

    • D. 

      Double the temperature of the object

  • 6. 
    Atmospheric pressure at sea level is caused by ________________.
    • A. 

      The force of gravity on the air

    • B. 

      The potential energy of molecules

    • C. 

      The gravitational pull of the sun

    • D. 

      The vacuum of space

  • 7. 
    Atmospheric pressure is pushing in on us all the time, but we don't feel it because ___________________.
    • A. 

      It only works on gas

    • B. 

      It is balanced by the pressure of the fluid in our cells

    • C. 

      Gravity cancels it out

    • D. 

      We can't feel air

  • 8. 
    Water pressure increases the farther down you go because ________________________.
    • A. 

      You are closer to the center of the earth

    • B. 

      The water molecules are packed together more tightly

    • C. 

      The weight of all of the water above you increases the pressure

    • D. 

      You get smaller the farther down you go

  • 9. 
    An object will float in a fluid if ______________________.
    • A. 

      The fluid displaced by the object weighs more than the object

    • B. 

      The object is small

    • C. 

      The fluid is colder than the object

    • D. 

      The fluid is a liquid, not a gas

  • 10. 
    If you have a helium balloon floating behind you in your car, and you turn sharply to the left, the balloon will ______________.
    • A. 

      Move to the right of the car because of inertia keeping it moving in a straight line

    • B. 

      Be forced to the left of the car by the inertia of the air in the car displacing it

    • C. 

      Not move because it is lighter than the air around it

    • D. 

      Pop