Simple Machines

Grade 7 Science — Simple Machines: 25 practice questions with instant scoring and explanations.

1. A simple machine is:
2. A lever is a simple machine consisting of:
3. A Class 1 lever has the fulcrum:
4. Which is an example of a Class 1 lever?
5. A Class 2 lever has the load:
6. Which is an example of a Class 2 lever?
7. A Class 3 lever has the effort:
8. Which is an example of a Class 3 lever?
9. A pulley is used to:
10. A movable pulley provides:
11. An inclined plane is a simple machine that:
12. The mechanical advantage of an inclined plane depends on:
13. A ramp is a form of:
14. A wheel and axle machine consists of:
15. Which is an example of a wheel and axle?
16. A screw is a simple machine that is:
17. A screw can be used to:
18. Mechanical advantage is defined as:
19. A machine with a mechanical advantage greater than 1:
20. The Law of the Lever is expressed as:
21. A longer effort arm in a lever means:
22. Efficiency of a machine is:
23. Friction in machines:
24. A compound machine is:
25. A car jack is an example of: