Force and Motion Quiz - CBSE Class 4 Science

Free practice quiz: Force and Motion (CBSE Class 4 Science). 20 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

This CBSE Class 4 Science practice quiz has 20 multiple-choice questions on Force and Motion, and 20 of them come with an explanation. Try the 5 sample questions below (tap an option to check yourself), then play the full quiz online. No sign-up needed.

Sample questions

1. What is a force?

   1. A push or pull on an object
   2. An object that moves
   3. The path of an object
   4. The speed of an object
   Show answer

   Answer: A. A push or pull on an object

   A force is defined as a push or pull acting upon an object. It can cause the object to move, stop, or change direction.

2. How does friction affect motion?

   1. Increases speed
   2. Decreases speed
   3. Has no effect
   4. Changes direction
   Show answer

   Answer: B. Decreases speed

   Friction is a force that opposes the motion of objects, so it generally decreases speed and can bring an object to a stop.

3. What unit is used to measure force?

   1. Kilograms
   2. Newtons
   3. Meters
   4. Liters
   Show answer

   Answer: B. Newtons

   The SI unit of force is the Newton (N), which quantifies the amount of force required to accelerate a one-kilogram mass by one meter per second squared.

4. What can be said about an object moving at constant speed in a straight line?

   1. There are balanced forces acting on it
   2. There is no force acting on it
   3. It is speeding up
   4. It is slowing down
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   Answer: A. There are balanced forces acting on it

   An object moving at constant speed in a straight line experiences balanced forces, which means no net force is acting to change its speed or direction.

5. If you wanted to push a heavy box across the floor with less effort, what could you do?

   1. Push it as hard as you can
   2. Use a lever
   3. Stop using friction
   4. Make the box heavier
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   Answer: B. Use a lever

   Using a lever reduces the amount of force required to move an object by amplifying the input force, making it easier to push heavy objects like boxes.

More questions in this quiz

Answers and explanations are in the full quiz.

1. Which of these is an example of a force?
2. What happens to an object when a force is applied to it?
3. If you push a stationary object, what will happen?
4. What is the effect of applying more force to an object?
5. What do balanced forces do to an object?
6. What is motion?
7. In a game of tug-of-war, if both teams pull with equal force, what will happen?
8. What is the relationship between mass and force?
9. How does changing speed affect motion?
10. What is inertia?
11. A car is stopped at a red light. What causes it to stay in place?
12. What can happen to a ball in motion if no forces act on it?
13. In a race, which factor can ensure a faster speed?
14. If a soccer player kicks the ball harder, what is the effect on the ball's motion?
15. Why do objects fall to the ground?

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