Practicing Class 8 Science MCQ and Class 8 Science Chapter 5 Exploring Forces MCQ Questions Online Test with Answers daily helps in time management.
Class 8 Exploring Forces MCQ with Answers
MCQ on Exploring Forces Eye Class 8
Class 8 Science Chapter 5 Exploring Forces MCQ Questions with Answers
Question 1.
Force is a
(a) Pull
(b) Push
(c) Both (a) and (b)
(d) None of these.
Answer:
(c) Both (a) and (b)
Question 2.
Leaves or fruits fall on the ground due to
(a) Magnetic force
(b) Gravitational force
(c) Electrostatic force
(d) Muscular force.
Answer:
(b) Gravitational force
Question 3.
The force between two charged bodies is called
(a) Muscular force
(b) Gravitational force
(c) Magnetic force
(d) Electrostatic force.
Answer:
(d) Electrostatic force.
Question 4.
Magnetic force is
(a) Contact force
(b) Non-contact force
(c) Both (a) and (b)
(d) None of these.
Answer:
(b) Non-contact force
Question 5.
Force acting on an object may change its
(a) Direction
(b) Shape
(c) Speed
(d) All of above
Answer:
(d) All of above
Question 6.
When you stretch a rubber band, which force are you applying?
(a) Magnetic force
(b) Frictional force
(c) Muscular force
(d) Gravitational force
Answer:
(c) Muscular force
Question 7.
A spring balance is used to measure
(a) Volume
(b) Density
(c) Force or weight
(d) Speed.
Answer:
(c) Force or weight
Question 8.
Which of the following statements is true about buoyant force and gravitational force?
(a) Both forces act in the same direction
(b) Buoyant force acts upward and gravitational force acts downward
(c) Buoyant force acts downward and gravitational force acts upward
(d) Both forces act only when the object is solid
Answer:
(b) Buoyant force acts upward and gravitational force acts downward
Question 9.
An object sinks in water when
(a) Gravitational force is more than buoyant force
(b) Buoyant force is more than gravitational force
(c) There is no force acting on it
(d) Buoyant force is equal to gravitational force.
Answer:
(a) Gravitational force is more than buoyant force
Question 10.
How does the mass of an object change if its weight is different on the Earth and the Moon?
(a) It changes with location
(b) It becomes half
(c) It remains the same
(d) It becomes zero in space
Answer:
(c) It remains the same
Exploring Forces Class 8 Assertion-Reason Type Questions
Directions (Q. No. 1 to 3): Each question below consists of an Assertion (A) and a Reason (R).
Use the following key to choose the appropriate answer.
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true but R is not the correct explanation of A
(c) A is true but R is false.
(d) A is false but R is true.
Question 1.
Assertion (A): A magnet can exert a force on another magnet without being in contact with it.
Reason (R): Contact force comes into play only when two objects are in contact with each other.
Answer:
(b) Both A and R are true but R is not the correct explanation of A
Question 2.
Assertion (A): A positively charged body attracts another positive charged body.
Reason (R): Objects fall towards the Earth because it pulls them.
Answer:
(d) A is false but R is true.
Question 3.
Assertion (A): The frictional force in air and water depends on the shape of the object.
Reason (R): Objects are designed in special shapes to reduce friction.
Answer:
(a) Both A and R are true and R is the correct explanation of A
Exploring Forces Class 8 Fill in the blanks
Question 1.
The friction always ……….. the direction of motion.
Answer:
opposes
Question 2.
Water in rivers flows ……….. due to the force of gravity.
Answer:
downward
Question 3.
A force arises due to the ……….. between two objects.
Answer:
interaction
Question 4.
Animals, birds, fish, and insects use ……….. forces for movement and survival.
Answer:
muscular
Question 5.
……….. is the gravitational force with which the Earth pulls an object.
Answer:
Weight
Exploring Forces Class 8 True or False
Question 1.
Weight and mass are measured in the same unit.
Answer:
False
Question 2.
The stretch in a spring remains the same regardless of the object’s weight.
Answer:
False
Question 3.
The weight of an object on the Moon is the same as that on the Earth.
Answer:
False
Question 4.
To move an object faster it has to be pushed or pulled repeatedly.
Answer:
True
Question 5.
Frictional force acts only on solid surfaces.
Answer:
False
Exploring Forces Class 8 Match the following
| Column A | Column B |
| (i) Force | (a) Non-contact force |
| (ii) Digestion | (b) Measuring force |
| (iii) Force of gravity | (c) Push or pull |
| (iv) Friction force | (d) Muscular force |
| (v) Spring balance | (e) Contact force |
Answer:
| Column A | Column B |
| (i) Force | (c) Push or pull |
| (ii) Digestion | (d) Muscular force |
| (iii) Force of gravity | (a) Non-contact force |
| (iv) Friction force | (e) Contact force |
| (v) Spring balance | (b) Measuring force |