Term 3 Fluids Three Marks

9th Standard

    Reg.No. :
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Science

Time : 00:45:00 Hrs
Total Marks : 30
    10 x 3 = 30
  1. On what factors the pressure exerted by the liquid depends on?

  2. Why does a helium balloon float in air?

  3. Why it is easy to swim in river water than in sea water?

  4. What is meant by atmospheric pressure?

  5. State Pascal’s law.

  6. A block of wood of weight 200 g floats on the surface of water. If the volume of block is 300 cm3 calculate the upthrust due to water.

  7. Density of mercury is 13600 kg m–3. Calculate the relative density.

  8. A body of voloume 100 cc is immersed completely in water contained in a jar. The weight of water and the jar before immersion of the body was 700 g. Calculate the weight of water and jar after immersion.

  9. The density of water is 1 g cm–3. What is its density in S.I. units?

  10. Calculate the apparent weight of wood floating on water if it weighs 100g in air.

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