Grade 4 Science And Technology – Force Quiz
1. what is force
2. which one of the following is not an effect of force
3. which among the following is not an example of force in daily lives?
4. which one of the following statements is true about force?
5. why should we take care while applying force
6. What is the SI unit of force?
The SI unit of force is Newton. It is named after Sir Isaac Newton.
7. Which of the following is a contact force?
Friction is a contact force that occurs when two surfaces rub against each other.
8. What is the force that opposes the motion of an object?
Friction is the force that opposes the motion of an object when it is in contact with another surface.
9. Which force keeps planets in orbit around the sun?
Gravity is the force of attraction between two objects with mass. It keeps planets in orbit around the sun.
10. What force helps you lift objects off the ground?
Lift is the force that acts opposite to the force of gravity and allows you to lift objects off the ground.
11. Which of the following is not a force?
Velocity is a measurement of the speed and direction of an object's motion, not a force.
12. When you push a book on a table, which force are you exerting?
When you push a book on a table, you are exerting an applied force in the direction of the push.
13. Which force allows a ball to bounce up after hitting the ground?
Normal force is the force exerted by a surface that is perpendicular to the surface and supports the weight of the object.
14. What is the force that pulls objects towards the center of the earth?
Gravity is the force that pulls objects towards the center of the earth due to the mass of the earth.
15. Which force makes a car come to a stop when you apply the brakes?
Friction between the brakes and the wheels of the car is what makes the car come to a stop when you apply the brakes.
16. What is a force?
A force is a push or pull on an object that can cause it to move or change direction.
17. Which of the following is an example of a contact force?
Friction is a contact force that occurs when two surfaces rub against each other.
18. Which force holds us on the ground and causes objects to fall?
Gravity is the force that pulls objects towards the center of the Earth, holding us on the ground and causing objects to fall.
19. What happens to an object when two equal forces act on it in opposite directions?
When two equal forces act on an object in opposite directions, they cancel each other out and the object remains still.
20. Which of the following is an example of a non-contact force?
Magnetism is a non-contact force that can act on objects without touching them.
21. What is the SI unit of force?
The SI unit of force is the Newton, which is equal to the force required to accelerate a one-kilogram mass at a rate of one meter per second squared.
22. Which of the following is an example of a force that can change the shape of an object?
An applied force is a force that is applied to an object by a person or another object, and it can change the shape of the object.
23. What force acts against motion when an object moves through the air or water?
Friction acts against motion when an object moves through the air or water, slowing it down.
24. Which force allows a magnet to attract metal objects?
Magnetism is the force that allows a magnet to attract metal objects without direct contact.
25. What type of force is needed to kick a football?
An applied force is needed to kick a football, as it requires a push or pull by a person to set the ball in motion.
26. Which of the following is NOT a contact force?
Gravity is a non-contact force that pulls objects towards each other due to their mass.
27. Which force allows an airplane to fly?
Lift force is generated by the wings of an airplane and allows it to overcome gravity and stay airborne.
28. What force resists the motion of objects sliding against each other?
Friction force opposes the motion of objects sliding against each other and converts kinetic energy into heat.
29. Which force keeps objects on Earth's surface?
Gravity is the force that pulls objects towards Earth's center and keeps them on its surface.
30. What force is responsible for causing a stretched rubber band to snap back?
Tension force in the stretched rubber band stores potential energy, causing it to snap back when released.
31. Which force causes a ball thrown upwards to fall back to the ground?
Gravity force pulls the ball back towards the ground after it reaches the peak of its upward motion.
32. What force is responsible for the attraction or repulsion of magnetic materials?
Magnetic force is the force between magnetic materials that causes attraction or repulsion.
33. Which force allows objects to float or sink in fluids?
Buoyancy force is the upward force exerted on an object in a fluid that allows it to float or sink.
34. What force allows a rocket to launch into space?
Thrust force is generated by the rocket engines pushing gases out, propelling the rocket upwards and overcoming gravity.
35. Which force allows a spring to return to its original shape after being stretched?
Tension force in the spring stores elastic potential energy, causing it to return to its original shape when the stretching force is removed.
36. What force is responsible for holding the molecules of a solid together?
Compression force holds the molecules of a solid together by pushing them closer, giving the solid its shape and structure.
37. Which force enables a person to push a heavy object across the floor?
Friction force between the object and the floor opposes the motion, allowing the person to push the object by exerting a greater force.
38. What force is responsible for the buoyancy of a boat in water?
Buoyancy force acting upwards on the boat is equal to the weight of water displaced, allowing the boat to float.
39. Which force allows a diver to descend into the water?
Gravity force pulls the diver downwards into the water, overcoming the buoyancy force acting upwards.
40. What force is responsible for the tension in a tightrope walker's balancing pole?
Tension force in the tightrope walker's pole balances the gravitational pull and provides stability for walking on the rope.
41. Which force allows a cyclist to pedal forward on a bike?
Thrust force is generated by the cyclist's legs pushing the pedals, propelling the bike forward and overcoming the forces of friction and air resistance.
42. What force is responsible for the resistance felt when stirring a viscous liquid?
Friction force between the liquid and the stirring implement opposes the motion, causing the resistance felt when stirring.
43. Which force enables a car to move forward on a road?
Thrust force generated by the car's engine pushes it forward on the road, overcoming the forces of friction and air resistance.
44. What force is responsible for the compression experienced when squeezing a stress ball?
Compression force is exerted by squeezing the stress ball, leading to a decrease in its volume and an increase in pressure inside.
45. Which force allows a kite to stay airborne in the sky?
Lift force generated by the airfoil shape of the kite allows it to overcome gravity and stay airborne in the sky.
46. What force is responsible for the tension in a stretched rubber band?
Tension force in the stretched rubber band stores potential energy, creating the tension that holds it stretched.
47. Which force enables a swimmer to move forward in the water?
Thrust force generated by the swimmer's arm and leg movements propels them forward in the water, overcoming the resistance of water.
48. What force is responsible for the magnetic attraction between two magnets?
Magnetic force between two magnets causes them to attract or repel each other based on their poles.
49. Which force allows a door to swing open and closed?
Gravity force acting on the door provides the torque necessary for it to swing open and closed on its hinges.
50. What force is responsible for the stability of a book resting on a table?
Friction force between the book and the table prevents it from sliding off, providing stability and keeping it in place.
51. Which force enables a soccer ball to move towards a goal when kicked?
Thrust force generated by the kick propels the soccer ball towards the goal, overcoming the forces of air resistance and friction.