Simple Machines Quiz - CBSE Class 4 Science

Free practice quiz: Simple Machines (CBSE Class 4 Science). 17 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

This CBSE Class 4 Science practice quiz has 17 multiple-choice questions on Simple Machines, and 17 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 simple machine?

   1. A complex tool
   2. A device that makes work easier
   3. A type of engine
   4. A scientific experiment
   Show answer

   Answer: B. A device that makes work easier

   A simple machine is defined as a device that makes work easier by allowing us to apply a smaller force over a greater distance.

2. How does a screw make work easier?

   1. By increasing speed
   2. By changing direction
   3. By applying force over a distance
   4. By reducing friction
   Show answer

   Answer: C. By applying force over a distance

   A screw makes work easier by allowing a small circular force to be applied to move things up or down along its spiral.

3. What type of simple machine is commonly used in cranes?

   1. Lever
   2. Pulley
   3. Screw
   4. Wedge
   Show answer

   Answer: B. Pulley

   Cranes often use pulleys as part of their systems to lift heavy loads with less effort, allowing for easy movement of materials.

4. Which simple machine can be used to hold things together?

   1. Screw
   2. Lever
   3. Pulley
   4. Wedge
   Show answer

   Answer: A. Screw

   A screw can hold materials together by providing a strong grip as it is driven into a surface, thanks to its helical structure.

5. What is a compound machine?

   1. A machine made of two or more simple machines
   2. A complex tool
   3. A type of computer
   4. A machine that does not work
   Show answer

   Answer: A. A machine made of two or more simple machines

   A compound machine consists of two or more simple machines working together to accomplish a task more efficiently.

More questions in this quiz

Answers and explanations are in the full quiz.

1. Which of the following is NOT a simple machine?
2. What is an example of a wheel and axle?
3. In what way does a wedge function?
4. What is the mechanical advantage of using simple machines?
5. When would you use a lever?
6. How does a hammer act as a simple machine?
7. What is the purpose of a ramp?
8. What is the main advantage of using an inclined plane?
9. Which simple machine makes it easier to load a heavy object onto a vehicle?
10. Which of the following is an example of a compound machine?
11. Why do you use a wedge to split wood?
12. What role do gears play in machines?

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