class 8 force

Force and Pressure - Class 8 Quiz | Willer Academy

Class 8 Science - Force & Pressure (20 MCQ Test)

Each question carries 3 marks. 1/3rd mark deducted for each wrong answer.

  1. Force can:
    Only stop a moving object
    Only change shape
    Do both above and more

  2. Unit of force is:
    Pascal
    Newton
    Joule

  3. Which of these is a contact force?
    Gravitational force
    Magnetic force
    Frictional force

  4. Pressure depends on:
    Force applied
    Area of contact
    Both A and B

  5. SI unit of pressure is:
    Newton
    Pascal
    Kilogram

  6. Which instrument measures atmospheric pressure?
    Thermometer
    Barometer
    Hydrometer

  7. Frictional force always:
    Acts in direction of motion
    Acts opposite to motion
    Acts vertically

  8. A non-contact force is:
    Muscular force
    Friction
    Electrostatic force

  9. Liquids exert pressure:
    Downward only
    Upward only
    In all directions

  10. Pascal's law is related to:
    Fluids exert equal pressure in all directions
    Force depends on mass
    Action and reaction

  11. When area decreases, pressure:
    Increases
    Decreases
    Remains constant

  12. Atmospheric pressure is maximum at:
    Sea level
    Mountain top
    Deep ocean

  13. Friction is useful in:
    Walking
    Writing
    Both A and B

  14. Unit of pressure:
    Newton
    Pascal
    Kg

  15. Force is measured by:
    Barometer
    Spring balance
    Thermometer

  16. Greater area results in:
    Less pressure
    More pressure
    Pressure remains same

  17. Gravity pulls objects:
    Away from Earth
    Towards Earth
    Parallel to Earth

  18. Friction can be reduced by:
    Lubricants
    Rough surfaces
    Increasing force

  19. Electrostatic force is due to:
    Heat
    Magnetic field
    Electric charges

  20. Friction converts motion energy into:
    Sound
    Heat
    Light

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