Class 8 Practice – Level 1 – Force and Pressure

Total questions: 40

Which of the following best describes force?

A push or pull acting on an object

The mass of an object

The speed of an object

The gravitational pull of the Earth

None

Which of these is NOT an effect of force on an object?

Changing its speed

Changing its shape

Changing its color

Changing its direction of motion

None

Which of the following is a contact force?

Gravitational force

Magnetic force

Muscular force

Electrostatic force

None

Pressure is defined as force acting on a unit:

Mass

Area

Distance

Time

None

Force can cause an object to:

Change shape only

Move only

Either move, change shape, or stop

Stay in the same state

None

The force that pulls objects towards the center of the Earth is called:

Frictional force

Muscular force

Gravitational force

Magnetic force

None

The SI unit of pressure is:

Newton

Joule

Pascal

Watt

None

Frictional force acts:

Opposite to the direction of motion

In the direction of motion

Vertically upward

Vertically downward

None

Pushing a shopping cart is an example of:

Gravitational force

Muscular force

Magnetic force

Electrostatic force

None

10.

In a fluid, pressure is exerted:

Only in one direction

Only upward

Equally in all directions

Only downward

None

11.

The SI unit of force is:

Pascal

Newton

Joule

Watt

None

12.

A spring balance is used to measure:

Mass

Force

Temperature

Pressure

None

13.

Which of the following is a force that opposes motion?

Magnetic force

Friction

Gravitational force

Muscular force

None

14.

Which of these can a force NOT do?

Start an object in motion

Increase the mass of an object

Change the shape of an object

Stop a moving object

None

15.

Increasing the area over which a force acts will:

Decrease pressure

Increase pressure

Have no effect on pressure

Double the force

None

16.

What happens when balanced forces act on an object?

The object starts moving

The object stays stationary or continues moving with the same speed

The object changes direction

None

17.

A force applied on an object in the opposite direction of its motion will:

Speed up the object

Have no effect

Slow down the object

Change the mass of the object

None

18.

A ball rolling on the ground stops after some time because of:

Gravitational force

Magnetic force

Electrostatic force

Frictional force

None

19.

Which of the following statements about pressure in gases is correct?

Gases exert pressure in all directions

Gases do not exert pressure

Gases exert pressure only in the upward direction

Gases exert pressure only at the top of a container

None

20.

On a smooth surface, the frictional force is:

High

Low

Zero

Unchanged

None

21.

The pressure exerted by a liquid at a given point is proportional to:

The density of the liquid

The color of the liquid

The shape of the container

The speed of the liquid

None

22.

Which of the following is an example of a non-contact force?

Muscular force

Frictional force

Gravitational force

Mechanical force

None

23.

Atmospheric pressure is caused by:

The wind blowing over the surface

The weight of air above us

The heat from the Sun

The rotation of the Earth

None

24.

Pressure in a liquid increases with:

Increase in depth

Increase in temperature

Increase in color

Decrease in area

None

25.

A force can change the:

Mass of an object

Time

Shape of an object

Distance between two objects

None

26.

Which of the following instruments is used to measure pressure?

Thermometer

Barometer

Speedometer

Galvanometer

None

27.

When a car accelerates, it is:

Undergoing uniform motion

In equilibrium

Experiencing an unbalanced force

Experiencing balanced forces

None

28.

The pressure exerted by a solid object is referred to as:

Hydrostatic pressure

Static pressure

Dynamic pressure

Pascal's pressure

None

29.

In fluid mechanics, the principle that explains why ships float is known as:

Archimedes' principle

Bernoulli's principle

Pascal's law

Newton's law

None

30.

In which scenario would pressure be the greatest?

A balloon filled with air

A bottle filled with water

A tire filled with air

A closed container with a gas

None

31.

When a soccer ball is kicked, what type of force is applied?

Gravitational force

Contact force

Magnetic force

Electrostatic force

None

32.

What is the typical unit of pressure used in weather reports?

Bar

Newton

Joule

Pascal

None

33.

If two people push a car in the same direction, the forces they apply are:

Balanced

Unbalanced

Opposite

Zero

None

34.

What does gravity do to a dropped object?

Makes it float

Has no effect

Causes it to rise

Causes it to fall

None

35.

In a closed container, the pressure of a gas increases when:

The volume increases

The temperature decreases

The volume decreases

The temperature remains constant

None

36.

Which of the following factors increases gravitational attraction between two objects?

Increasing their mass

Decreasing their distance

Both a and b

None of the above

None

37.

What is the formula for calculating pressure?

Force × Area

Force / Area

Mass × Acceleration

Mass / Volume

None

38.

If the area of contact is doubled while keeping the force constant, the pressure will:

Double

Halve

Remain the same

Quadruple

None

39.

Which of the following uses friction to function effectively?

A skateboard

A bicycle brake

A car tire

All of the above

None

40.

What is the standard unit of force in the International System of Units (SI)?

Kilogram

Joule

Newton

Meter

None

1 out of 40

Time's up

Class 8 Practice – Level 1 – Force and Pressure

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