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Class 8 Practice – Level 2 – Set 1 - Force and Pressure
Total questions: 25
1.
When an unbalanced force acts on a moving object in the direction opposite to its motion, the object will:
Speed up
Slow down and eventually stop
Move in a circular path
Remain unaffected
None
2.
Which of the following will experience the least frictional force?
A rubber ball on a rough concrete floor
A wooden block on sandpaper
A rubber tire on asphalt
A steel ball on a smooth ice surface
None
3.
Which of these actions involves a non-contact force?
Pushing a door open
Pulling a suitcase
Attracting iron nails with a magnet
Moving a book with your hand
None
4.
How does pressure vary with depth in a liquid?
It increases with depth
It decreases with depth
It remains constant
It decreases, then increases
None
5.
Why don’t we feel the atmospheric pressure acting on our body?
It is negligible
Our body exerts an equal outward pressure
It only acts on surfaces, not on bodies
The atmosphere has no mass
None
6.
Which of the following changes can reduce friction between two surfaces?
Making the surface rougher
Using sandpaper between the surfaces
Increasing the force between the surfaces
Using oil or grease between the surfaces
None
7.
Which of the following correctly pairs the SI unit of force with its symbol?
Newton, N
Joule, J
Pascal, P
Watt, W
None
8.
Why does a diver experience greater pressure as they go deeper underwater?
The weight of the water above increases with depth
Water density decreases with depth
The temperature of the water increases with depth
Water’s surface tension increases
None
9.
If balanced forces act on a moving car, what will be the result?
The car will stop
The car will move in the opposite direction
The car will continue moving at the same speed and direction
None
10.
If you were to take an object to the Moon, how would its weight change compared to its weight on Earth?
It would decrease
It would increase
It would remain the same
It would depend on the shape of the object
None
11.
Which of the following is a result of applying force to a sponge?
It becomes heavier
Its color changes
Its shape changes
It loses mass
None
12.
If the area on which a force acts is doubled, what happens to the pressure?
It doubles
It is halved
It remains the same
It becomes zero
None
13.
Which of these forces requires physical contact between objects?
Frictional force
Gravitational force
Magnetic force
Electrostatic force
None
14.
Which of the following can be caused by an applied force?
Only a change in motion
Only a change in shape
Either a change in motion or shape
Only a change in direction
None
15.
Why do objects eventually stop moving on the ground without continuous force?
Gravitational force
Frictional force
Lack of sufficient weight
Lack of balanced forces
None
16.
According to Newton’s first law of motion, an object will remain in its state of motion unless:
A force acts on it
Gravity is removed
It is moved to a higher altitude
It is placed in a vacuum
None
17.
Which of the following would be effective in reducing friction on a sliding object?
Increasing the weight of the object
Using rough surfaces
Adding wheels to the object
Making the surface uneven
None
18.
Pressure in gases is due to:
The volume of the gas
The density of the container
The weight of the container
The motion and collisions of gas particles
None
19.
At higher altitudes, atmospheric pressure:
Increases
Decreases
Remains the same
First decreases, then increases
None
20.
Which instrument is used to measure atmospheric pressure?
Thermometer
Hygrometer
Barometer
Anemometer
None
21.
Which of the following types of forces can change the direction of a moving object without physical contact?
Frictional force
Magnetic force
Muscular force
Normal force
None
22.
A heavy truck and a bicycle are moving at the same speed. Which one requires more force to stop?
The bicycle, because it is lighter
The truck, because it has more mass
Both will require the same force
Depends on the friction of the road
None
23.
Why do tires have a maximum pressure limit?
To save on fuel
To ensure tire longevity
To prevent the tire from bursting
To make driving more comfortable
None
24.
What happens to the buoyant force acting on a stone when it is placed in water?
It decreases
It increases
It becomes zero
It stays the same
None
25.
A nail is easier to drive into wood with its pointed end because:
The force is applied to a smaller area, increasing pressure
The nail is made of a hard material
The sharp end reduces friction
It prevents the hammer from slipping
None
1 out of 25
Time's up
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