NMMS CLASS 8 Force and Pressure 3

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Force and Pressure 1

Force and Pressure 2

Force and Pressure 3

Force and Pressure 4

Force and Pressure 5 


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NMMS CLASS 8 Force and Pressure 👇 



1. When we press a toothpaste tube, the paste comes out. This shows that —

  • Force changes mass
  • Air exerts pressure
  • Gravity acts on liquids
  • Pressure is transmitted equally in all directions in a liquid

2. A girl stands on one foot. The pressure on the ground —

  • Increases
  • Decreases
  • Remains the same
  • Becomes zero

3. If the area of contact increases and the force remains same, pressure —

  • Increases
  • Remains constant
  • Becomes zero
  • Decreases

4. When you hammer a nail into wood, you are using —

  • Magnetic force
  • Frictional force
  • Muscular force
  • Electrostatic force

5. A deep-sea diver feels more pressure because —

  • Water has no pressure
  • Air pressure is more
  • Water pressure decreases with depth
  • Water pressure increases with depth

6. The shape of a football changes when kicked because —

  • Air escapes out
  • Friction decreases
  • Pressure remains same
  • Force changes the shape of objects

7. If a truck and a car apply equal forces on the ground, which one exerts less pressure?

  • Car
  • Both same
  • Truck
  • Cannot be determined

8. We cannot walk easily on ice because —

  • Friction is more on ice
  • Gravity is less on ice
  • Pressure is more
  • Friction is less on ice

9. A boy tries to push a heavy box but it does not move. This means —

  • Force is unbalanced
  • Friction is zero
  • Forces are balanced
  • Box is light

10. A moving ball stops after some time due to —

  • Magnetic force
  • Electrostatic force
  • Gravitational force
  • Frictional force

11. When an object is dropped, it falls towards Earth because of —

  • Muscular force
  • Magnetic force
  • Frictional force
  • Gravitational force

12. When the speed of wind increases, air pressure —

  • Increases
  • Remains constant
  • Becomes zero
  • Decreases

13. A flat-head nail cannot be inserted easily into wood because —

  • It has small area
  • It exerts high pressure
  • Force is not enough
  • It has a large area

14. The reason why sharp objects cut better is —

  • They exert less pressure
  • Force is less
  • Area is large
  • They exert more pressure

15. The force which pulls objects towards the centre of the Earth is —

  • Gravitational force
  • Electrostatic force
  • Frictional force
  • Muscular force

16. The reading of a barometer falls before a storm because —

  • Temperature increases
  • Air pressure decreases
  • Humidity increases
  • Air pressure increases

17. When a person swims under water, pressure on him —

  • Increases with depth
  • Decreases with depth
  • Remains same
  • Becomes zero

18. The wheels of a tractor are made broad so that —

  • Speed increases
  • Force increases
  • Pressure on ground decreases
  • Pressure on ground increases

19. A man standing on snow wears flat shoes to —

  • Increase friction
  • Reduce friction
  • Increase pressure on snow
  • Reduce pressure on snow

20. The air pressure inside a balloon is —

  • Equal to outside air pressure
  • Less than outside air pressure
  • Zero
  • Greater than outside air pressure

21. When you press a rubber sucker on a wall, it sticks because —

  • No pressure acts
  • Friction acts upward
  • Gravity pulls it
  • Air pressure acts from outside

22. The reason you feel pain when a needle pricks your skin is —

  • It has no force
  • It exerts high pressure
  • It exerts low pressure
  • Air pushes it

23. The direction of force of friction is —

  • Same as motion
  • Upward
  • Perpendicular to motion
  • Opposite to motion

24. When we inflate a tyre, air inside it —

  • Has no pressure
  • Loses pressure
  • Becomes weightless
  • Exerts pressure on walls

25. The reason an umbrella withstands wind is because —

  • Wind has no force
  • Pressure acts only upward
  • Umbrella has no area
  • Pressure acts on both sides

26. A book resting on a table experiences —

  • Unbalanced forces
  • Zero pressure
  • Magnetic forces
  • Balanced forces

27. The reason why mountain climbers carry oxygen cylinders is —

  • Air pressure increases with height
  • Air becomes heavier
  • Air pressure remains same
  • Air pressure decreases with height

28. When a ball is pressed against the ground, the ground also pushes the ball upward. This shows —

  • Force acts in one direction only
  • No force acts
  • Force acts randomly
  • Force of action and reaction are equal and opposite

29. The pressure on the ground is greater when a person —

  • Lies down
  • Sits
  • Walks slowly
  • Stands on heels

30. The reason deep-sea fishes can survive under great pressure is —

  • They have lungs
  • Their bodies are adapted to withstand pressure
  • They are light in weight
  • They live near surface
Location: Mogalturu, Andhra Pradesh 534281, India

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