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Force and Pressure Science - Force and Pressure

Jharkhand Board (JAC) - STD 8 - Science (Jharkhand - English Medium). 456 questions in this chapter.

Question types

Force and Pressure question types

456 questions across 10 question groups — pick any mix to generate a Science paper with step-by-step answer keys.

456
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10
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5
Question types
Sample Questions

Force and Pressure questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 1M.C.Q. [I MARKS]1 Mark
In the given figure, a beaker is filled with water. $A, B$ and $C$ are three holes in beaker, which of the following statements is correct regarding this?
  • A
    The water comes out with maximum pressure from hole $A.$
  • B
    The pressure of water comes out from hole $B$ is greater than the pressure of water comes out from hole $C$ and hole $A$.
  • ✓
    The water falls out the farthest through the hole $C.$
  • D
    The water falls out the nearest through the hole $B.$

Answer: C.

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Q 4M.C.Q. [I MARKS]1 Mark
Which of the following effects is caused by frictional force?
  • A
    Change in the shape of an object
  • B
    Change in the direction of the motion of an object
  • C
    Slowing down of a moving object
  • ✓
    Acceleration in a moving body

Answer: D.

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Q 5M.C.Q. [I MARKS]1 Mark
Payal is completed her science chapter where she wrote some statements. She wants to know whether the statements are correct or not? Payel wants to take help from you:
  • A
    Pressure is produced when a force acts on an object.
  • B
    The force with which the earth pulls the objects towards it, is called the force of gravity.
  • C
    The gravitational force between the sun and the earth which holds the earth in its orbit around the sun.
  • ✓
    None of the above.

Answer: D.

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Q 12Fill in the blanks: [1 M]1 Mark
Fill in the following blanks with suitable words: If the two forces applied to an object are equal and act in opposite directions, the net force acting on the object will be $............$
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Q 16questions in short. [2 marks ]2 Marks
An inflated balloon was pressed against a wall after it has been rubbed with a piece of synthetic cloth. It was found that the balloon sticks to the wall. What force might be responsible for the attraction between the balloon and the wall?
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Q 22scientific reasons[2 marks ]2 Marks
Two rods: A and B, having same weight and equal length have different thickness. Rod A is thinner while Rod B is thicker. They are held vertically on the surface of sand. Which one of them will sink more? Why?
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Q 23scientific reasons[2 marks ]2 Marks
An archer shoots an arrow in the air horizontally. However, after moving some distance, the arrow falls to the ground. Name the initial force that sets the arrow in motion. Explain why the arrow ultimately falls down.
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Q 24scientific reasons[2 marks ]2 Marks
Two persons are applying forces on two opposite sides of a moving cart. The cart still moves with the same speed in the same direction. What do you infer about the magnitudes and direction of the forces applied?
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Q 41questions in on sentence. [1 M]1 Mark
A rocket has been fired upwards to launch a satellite in its orbit. Name the two forces acting on the rocket immediately after leaving the launching pad (Ignore the frictional force due to air resistance).
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Q 43questions in on sentence. [1 M]1 Mark
In the following situations identify the agent exerting the force and the object on which it acts. State the effect of the force in each case. An athlete making a high jump to clear the bar at a certain height.
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Q 44questions in on sentence. [1 M]1 Mark
In the following situations identify the agent exerting the force and the object on which it acts. State the effect of the force in each case. A load suspended from a spring while its other end is on a hook fixed to a wall.
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Q 46case /data -based (4 Marks)4 Marks
Mark ills a bottle completely with water.
The bottle has three same sized plugged holes on its wall.
Mark pulls out the plugs and checks the position of the stream of water coming out.Image
$7.$ What does Mark’s activity show$?$
$A.$ Liquids exert pressure.
$B.$ Liquids contract on cooling.
$C.$ Liquids cannot be compressed.
$D$. Liquids have no deinite shape.
$8.$ Which of these is an example of a contact force$?$
$A.$ A guava falling from the tree.
$B.$ A magnet attracting a hanging iron nail.
$C.$ A plastic comb attracting small pieces of hair.
$D.$ A boat moving on water by the action of wind on its sail.
$9.$ Which of these is true for force$?$
Circle ‘Yes’ or ‘No’ for the correct response.
Is this Correct? Yes or No
A force can change the state of motion of an object. Yes/No
A force can change the shape of an object. Yes/No
A force can act between two solid objects only. Yes/No
$7.$
Image

$P, Q, R$ and $S$ are four solid objects having the same mass.
Which object is exerting the least pressure on the table$?$
$A. P$
$B. Q$
$C. R$
$D. S$
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Q 47case /data -based (4 Marks)4 Marks
Four students wanted to ind out who could kick a football the strongest. Each student kicked the football.Image
The table shows the distance the football travelled in air before hitting the ground.
  Student $1$ Student $2$ Student $3$ Student $4$
Distance the ball travelled in air before hitting the ground $10\ m$ $12\ m$ $8\ m$ $14\ m$
$4.$ Which student kicked the ball with the greatest force$?$
$A$. Student $1$
$B.$ Student $2$
$C.$ Student $3$
$D.$ Student $4$
$5.$ Shade the columns in the graph to correctly show the data in the table.
Image
$6.$ Which of these factors must remain the same when each student kicks the football$?$
Circle ‘Yes’ or ‘No’ for the correct response.
Factor that must remain the same Yes or No
Type of ground surface Yes/No
Direction and speed of the wind Yes/No
Size of the shoe worn by the student Yes/No
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Q 48case /data -based (4 Marks)4 Marks
Two groups of students are playing tug-of-war.
Image
$2.$ Choose the correct direction of force applied by Group $1$ and Group $2.$
Image
$3.$ Group $1$ is pulling with $250\ N$ force and Group $2$ is pulling with $300\ N$ force.
What would be the likely position of the two groups after a minute of pulling$?$​​​​​​​
Image
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Q 49case /data -based (4 Marks)4 Marks
What type of force is involved in each of the given conditions$?$
Put a tick mark (✔) for the response in terms of push or pull.
Condition Push Pull
Hitting a ball with a bat.    
Sucking milk shake with a plastic straw.    
Lifting a school bag from a desk.    
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