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Upthrust calculations

Quiz by Oak National Academy: GCSE Physics OCR Higher

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6 questions
Show answers
  • Q1
    Which of the following statements explains why ice floats in liquid water?
    The particles are farther apart in ice than in water.
    Ice is made of heavier particles than water.
    The particles move faster in water than in ice.
    Ice is made of larger atoms than water.
    30s
  • Q2
    Which of the following statements correctly describe differences for particles of water at greater depths compared with particles that are not as deep down?
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    Sorting
    30s
  • Q3
    Which of the following statements about upthrust is correct?
    No upthrust acts on an object resting on the bottom of a container of liquid.
    Upthrust is caused by differences in pressure in a fluid.
    No upthrust acts on an object that is floating on a liquid.
    Upthrust is caused by the weight of an object.
    30s
  • Q4
    For an object surrounded by a liquid, how many of the following are possible descriptions of the upthrust force: no upthrust; upwards upthrust; downwards upthrust; upthrust in all directions?
    4
    2
    none of them
    3
    1
    30s
  • Q5
    A toy is dropped in a swimming pool. The toy has a mass of 0.80 kg, a weight of 8.0 N and an upthrust force of 6.0 N acting on it. What is the size and direction of the toy’s vertical acceleration?
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    Sorting
    30s
  • Q6
    A diver is 80 m below the surface of the sea. The density of seawater is 1020 kg/m^3. The gravitational field strength is 9.8 N/kg. What is the water pressure on the diver in MN/m^2?
    120 MN/m^2
    0.77 MN/m^2
    8300 MN/m^2
    0.80 MN/m^2
    30s

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