Questions : Simple Machines

 Simple Machines

Q.1. Why did man invent machines?

Q.2. What is work in Science?

Q.3. What is a machine?

Q.4. Name some simple Machines.

Q.5. Name the basic types of simple machines.

Q.6. How is an inclined plane useful?

Q.7. What is an inclined plane?

Q.8. What is a wedge?

Q.9. How is a wedge helpful to us?

Q.10. Give an example of wedge.

Q.11. What is a lever?

Q.12. What is the fixed point of a lever called?

Q.13. What is a wheel and axle?

Q.14. Give an example of a wheel and axle.

Q.15. What is a screw?

Q.16. How is a screw helpful to us?

Q.17. Give an example of a screw.

Q.18. What is a pulley?

Q.19. How is pulley helpful to us?

Q.20. Give an example of a pulley.

Questions : Simple Machines

 Simple Machines

Q.1. Name some simple machines.

Q.2. What is the use of simple machines?

Q.3. What is load, fulcrum and effort?

Q.4. What is necessary for every lever?

Q.5. What is the lever?

Q.6. What is the first kind of lever? Give a few examples.

Q.7. What is the second kind of lever? Give a few examples.

Q.8. What is the third kind of lever? Give a few examples.

Q.9. What is the use of a pulley?

Q.10. How many kinds of pulleys are there? Name them.

Q.11. What is a fixed pulley? What is the order of levers for fixed pulleys?

Q.12. What is a movable pulley?

Q.13. Is a wheel a machine? When does it become a machine?

Q.14. What is an inclined plane?

Q.15. What is the effect of an inclined plane on work?

Q.16. Give some examples where the principle of inclined plane is used.

Q.17. What is a screw?

Q.18. What is the pitch of the screw?

Q.19. What is the purpose of a Screw Jack?

Q.20. What is a wedge?

Q.21. Where are wedges used?

Q.22. On what principle does a wedge work?