CBSE Class 8 Science Force Important Questions Set A

Read and download free pdf of CBSE Class 8 Science Force Important Questions Set A. Download printable Science Class 8 Worksheets in pdf format, CBSE Class 8 Science Chapter 11 Force and Pressure Worksheet has been prepared as per the latest syllabus and exam pattern issued by CBSE, NCERT and KVS. Also download free pdf Science Class 8 Assignments and practice them daily to get better marks in tests and exams for Class 8. Free chapter wise worksheets with answers have been designed by Class 8 teachers as per latest examination pattern

Chapter 11 Force and Pressure Science Worksheet for Class 8

Class 8 Science students should refer to the following printable worksheet in Pdf in Class 8. This test paper with questions and solutions for Class 8 Science will be very useful for tests and exams and help you to score better marks

Class 8 Science Chapter 11 Force and Pressure Worksheet Pdf

1. Define force.
 
2. 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 ?
 
3. How many objects should be present for a force to come into play ?
 
4. Two friends A and B are applying a force of 2 newton and 4 newton on a box in the same direction. What will be the total force applied by them ?
 
5. In a tug of war, side A applies 10 newton force and side B applies 8 newton force. Which side will the rope move ?
 
6. What happens to the speed of a body when a force is applied ?
 
7. Can we change the direction of the moving object by applying a force ?
 
8. Is it possible that a force changes the direction of motion but not the speed of an object ?
 
9. Give an example to show that force can change the shape of an object.
 
10. What is meant by contact force ?
 
11. Give two examples each of situations in which you push or pull to change the state of motion of objects.
 
12. Give two examples each of situations in which applied force causes a change in the shape of an object.
 
13. If the force is applied opposite to the motion, what will happen to the speed of the object?
 
14. State the two factors which describe the state of motion of an object.
 
15. How do the mud particles fly off the wheel of a vehicle moving on the wet road ?
 
16. Name the forces acting on a plastic bucket containing water held above ground level in your hand. Discuss why the forces acting on the bucket do not bring a change in its state of motion.
 
17. (a) What is weight ?
 
(b) What is the unit of weight ?
or measuring the weight of an object.
 
(d) Can weight be taken as
 a measure of force ?
 
18. Name the type of force(c) Name the device used f in the following cases.
 
(a) Raindrops falling on the earth.
 
(b) Holding a book on your hand.
 
(c) Running a comb through your dry hair.
 
(d) A bar magnet suspended freely.
 
(e) Bullocks ploughing the field.
 
 
ANSWER KEY
 
1. Force is a push or pull on an object.
 
2. Electrostatic force.
 
3. There should be atleast two objects for a force to come into play.
 
4. The total force will be 6 newton, i.e., the sum of their individual forces.
 
5. The rope will move towards side A as more force is applied by side A.
 
6. The speed of a body can be increased or decreased by applying force.
 
7. Yes, we can change the direction of the moving object by applying a force.
 
8. Yes, it is possible when a body is moving on a circular path.
 
9. Pressure a rubber ball with the hand.
 
10.. A force which is applied only when it is in contact with an object is called a contact force.
 
11. Push – moving a loaded cart, batsman hitting a ball. Pull – opening a drawer, drawing a bucket of water from a well.
 
12. (a) Pressing a lump of dough with hand.
 
(b) Pressing an inflated balloon.
 
13. When the force is applied opposite to the motion of the object, then either the speed decreases or the direction changes.
 
14. The state of motion is described by its speed and direction of motion.
 
15. The direction of the mud particles change at every point as the wheel of the vehicle moves.
 
16. The forces acting on the bucket is its own weight acting downwards and the muscular force of the hand acting upwards. Since both the forces are equal and acting in opposite directions, they balance each other. So, they donot bring
any change in the state of motion of bucket. The hand feels tired due to the weight of bucket.
 
17. (a) Weight of an object is the force of gravity acting on the object.
 
(b) Unit of weight is newton or kilogram weight.
 
(c) Spring balance is used for measuring the weight of an object.
 
(d) Yes, the weight can be taken as a measure of force.
 
18. (a) Force of gravity.
 
(b) Force of gravitation (weight)
 
(c) Electrostatic force.
 
(d) Magnetic force.
 
(e) Muscular force.
 
 


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CBSE Class 8 Science Chapter 11 Force and Pressure Worksheet

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