Grade 6 Science And Technology – Force Quiz

1. The force that opposes motion is called

Force of gravity
Friction
Motion
Weigh
Explanation:

2. Which of the following is not an advantage of friction?

Movement of vehicles
Causing blisters on hands
Lighting matches
Helps in walking and running
Explanation:

3. Identify one way of reducing friction

Smoothening surfaces
Oiling and greasing
Streamlining
Using rollers
Explanation:

4. Which of the following is not a way of increasing friction?

Using rollers
Increasing the weight if objects
Application of lubricants
Using ball bearing
Explanation:

5. Identify one way we use friction in everyday life

Singing
Wearing clothes
Boiling water
Making stationary things move
Explanation:

6. Which of the following is a type of force?

Speed
Sound
Gravity
Color
Explanation:

Gravity is a force that pulls objects towards each other.

7. What is the unit of force?

Volt
Joule
Watt
Newton
Explanation:

Newton is the unit of force in the International System of Units (SI).

8. Which of the following is NOT a contact force?

Tension
Magnetic force
Gravity
Friction
Explanation:

Gravity is a non-contact force that acts over a distance.

9. When two forces are acting on an object in opposite directions, what is the result?

The object accelerates in the direction of the stronger force
The object moves in the direction of the stronger force
The object remains stationary
The object moves in the direction of the weaker force
Explanation:

The object will accelerate in the direction of the stronger force.

10. Which of the following is an example of a balanced force?

A ball falling towards the ground
A book resting on a table
A car accelerating
A rocket launching into space
Explanation:

A book at rest on a table experiences balanced forces.

11. What is the formula for calculating force?

Force = Energy / Distance
Force = Power x Time
Force = Velocity / Time
Force = Mass x Acceleration
Explanation:

Force is equal to the mass of an object multiplied by its acceleration.

12. What is the force that opposes motion between two surfaces in contact?

Magnetic force
Tension
Gravity
Friction
Explanation:

Friction is the force that opposes motion between two surfaces in contact.

13. Which of the following is a force that acts on an object in free fall?

Magnetic force
Tension
Air resistance
Friction
Explanation:

Air resistance is a force that acts on an object in free fall due to the air it displaces.

14. What do you call the force that pulls objects towards the center of the Earth?

Magnetic force
Gravity
Friction
Tension
Explanation:

Gravity is the force that pulls objects towards the center of the Earth.

15. Which of the following is a force that keeps objects in circular motion?

Gravity
Centripetal force
Friction
Tension
Explanation:

Centripetal force is the force that keeps objects in circular motion by pulling them towards the center.

16. Which of the following is an example of a force of tension?

Pushing a box
Holding a hanging weight with a string
Magnetic force between two magnets
Throwing a ball
Explanation:

Tension is the force that occurs when a string or rope is pulled tight.

17. Which of the following is NOT a factor affecting the force of friction?

Speed of the object
Surface area in contact
Mass of the object
Temperature of the object
Explanation:

Temperature does not directly affect the force of friction between two surfaces.

18. What is the force that pushes or pulls objects that are electrically charged?

Tension
Friction
Magnetic force
Gravity
Explanation:

Magnetic force pushes or pulls objects that are electrically charged.

19. Which of the following is a force that needs contact to act?

Friction
Air resistance
Gravity
Magnetic force
Explanation:

Friction is a force that requires objects to be in contact for it to act.

20. When two forces are equal in size but opposite in direction, what is the result?

The object explodes
The object moves in the direction of the weaker force
The object remains stationary
The object accelerates in the direction of the stronger force
Explanation:

When two forces are balanced, the object remains stationary or moves at a constant velocity.

21. What force keeps the planets in orbit around the sun?

Tension
Magnetic force
Friction
Gravity
Explanation:

Gravity is the force that keeps the planets in orbit around the sun.

22. What is force?

A push or pull on an object
The weight of an object
The color of an object
The speed of an object
Explanation:

Force is defined as a push or pull on an object.

23. Which of the following is an example of a contact force?

Electric force
Magnetic force
Gravitational force
Frictional force
Explanation:

Frictional force is a contact force that occurs when two surfaces rub against each other.

24. What is the SI unit of force?

Kilogram
Second
Newton
Meter
Explanation:

The SI unit of force is the Newton, named after Sir Isaac Newton.

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

Normal force
Tension force
Applied force
Air resistance force
Explanation:

Air resistance force is a non-contact force that acts on objects moving through air.

26. What is the formula for calculating force?

Mass x Distance
Mass x Acceleration
Speed x Time
Mass x Volume
Explanation:

The formula for calculating force is F = ma, where F is force, m is mass, and a is acceleration.

27. Which of the following is an example of a balanced force?

A car accelerating on a flat road
A ball rolling down a hill
A book falling off a table
A tug-of-war between two equally strong teams
Explanation:

A balanced force is when two forces of equal strength act on an object in opposite directions.

28. What type of force keeps the planets in orbit around the sun?

Magnetic force
Frictional force
Tension force
Gravitational force
Explanation:

Gravitational force is responsible for keeping planets in orbit around the sun due to the massive attraction between them.

29. Which of the following is an example of a force of friction?

A magnet attracting a paperclip
Sledding down a snow-covered hill
Rubbing hands together to generate heat
Pushing a heavy box across the floor
Explanation:

The force of friction is the resistance created when two surfaces move against each other.

30. What happens to an object when an unbalanced force is applied to it?

It changes its direction
It accelerates
It remains still
It moves at a constant speed
Explanation:

An unbalanced force causes an object to accelerate in the direction of the force.

31. Which force opposes the motion of an object through a fluid?

Magnetic force
Tension force
Frictional force
Drag force
Explanation:

Drag force opposes the motion of an object through a fluid like air or water, slowing it down.