NCERT Class 8 - Science - Chapter: Force and Pressure (Worksheet) (#cbsenotes)(#eduvictors)

Force and Pressure 

Class 8 - Science

(Worksheet)

Fill in the blanks

1. Muscular force is an example of _______ force.

2. Oil is applied to machines to reduce _______ force.

3. S.I unit of pressure is ____________.

4. S.I. unit of force is _____________.

5. If the area of contact is increased, then pressure ______ _.

6. Pressure in solid depends upon ________________ and ____________.



7.  Pressure in liquids depends upon _____________ and ______________.

8. The cutting edge of cutting instruments is sharpened because, by _______ the area of cross-section, the _______ increases.

9. Muscular forces can be exerted only through _________.

10. A stone falling from the roof of a house is an example of _______ force.

11. The force exerted by a charged body on other charged body is known as _________ force.

12. Force is a _____ or a ____.

13. Force can change the _______ of motion of an object.

14. A spring balance is used to measure ______ _.

15. _______ force always opposes the motion of the body.

16. A force arises due to __________ between two objects.

17. The pressure exerted by air around us is known as __________.

18. If the two forces act in the opposite direction on an object, the net force acting on it is the ______ between the two forces.

19. The north pole of a magnet _______ the north pole of another magnet.

20. In a tug-o-war, two teams pulling a rope does not move towards any team, it implies that net force is ________.


☛See also:
Ch 11 - Force and Pressure (Q & A)
Ch11 - Force and Pressure (MCQs)
Ch 11 - Force (What is Inertia?)
Ch 11 - Force and Pressure (Assignment Sheet)
Ch 11 - Force and Pressure (Worksheet)

Answers:
1: contact
2: Friction
3: N/m² or Pascal
4: Newton (N)
5: decreases
6: force, area
7: density, height(depth)
8: reducing, pressure
9: contact
10: gravitational
11: electrostatic
12: push, pull
13: state
14: weight
15: Friction
16: interaction
17: atmospheric pressure
18: difference
19: repels
20: zero