Kerala SCERT Class 8 Science Chapter 10 Force Question Answer Solution Here. Kerala Board Class 8 Students can find Here 10th Chapter Force Notes provide by our Teacher. Important Question Answer from Chapter 10 Force.
- Board- Kerala Board.
- Class – 8.
- Subject – Science Part 1
- Chapter – 10.
- Chapter Name – Force.
- Topic – Question Answer Solution.
Question: (1) objects in the universal have an attractive force between them this attractive force is the __________?
(a) Gravitational force
(b) Electrostatic force
Ans: – Gravitational force.
Question: (2) when body moves or tends to move on the surface of another body, a force is experience parallel to the surface which opposes the relative motion between them this is __________?
(a) Friction
(b) Motion
Ans: – Friction.
Question: (3) when a body rolls the surface of another body the force of friction which originates is ____________?
(a) Rolling friction
(b) Sliding friction
Ans: – Rolling friction.
Question: (4) the law discovered by________ in relation to pressure is known as Pascal’s law ?
(a) Blasé Pascal
(b) Sir Isaac Newton
Ans: – Blasé Pascal.
Question: (5) the pressure exerted by a liquid column increase with ______ in height?
(a) Increase
(b) Decrease
(c) Constant
Ans: – Increase.
Question: (6) an envelope of air surround the earth this is the earth’s __________?
(a) Atmosphere
(b) Hemisphere
Ans: – Atmosphere.
VERY SHORT QUESTION:
Question: (1) what is magnetic force?
Ans: – A magnetic force has property of attraction and repulsion this force applied by a magnet is the magnetic force.
Question: (2) what is friction?
Ans: – When a body moves or tends to move on the surface of another body, a force is experienced parallel to the surface which opposes relative motion between them.
Question: (3) what is rolling friction?
Ans: – When body is roll over the surface of another body, the force of friction which originates is rolling friction.
Question: (4) what is atmospheric pressure?
Ans: – The weight of air column over unit area of the earth’s surface is atmospheric pressure.
SHORT NOTE:
Question: (1) EXPLAIN ATMOSPHERIC PRESSURE?
Ans: – An envelope of air surrounds the earth this is the earth’s atmosphere. The density of atmospheric air near the surface of earth is greater and decrease as we go up. Hence atmospheric pressure decreases as we go up.
Question: (2) describe different types of friction?
Ans: – When a body roll over the surface of another body the force of friction which originates is rolling friction. When body slides on the surface of another body the force of friction which originates is sliding friction.