ICSE Class 6 Physics - Simple Machines - Test 5 (Comprehensive)
1. Which statement best describes a simple machine?
A. A device that removes work completely
B. A device used only for measuring temperature
C. A device that makes work easier
2. A rigid bar that turns about a fixed point is called a:
A. Lever
B. Screw
C. Pulley only
3. In a lever, the point about which the bar turns is the:
A. Effort
B. Fulcrum
C. Load
4. The resistance or object moved by a machine is called the:
A. Thread
B. Wheel
C. Load
5. The force applied to operate a machine is known as:
A. Effort
B. Load
C. Fulcrum
6. Which simple machine is shown by a playground seesaw?
A. Screw
B. First-class lever
C. Wedge only
7. In a second-class lever, the load is placed:
A. Before the fulcrum only
B. Outside the machine
C. Between fulcrum and effort
8. A fishing rod is commonly an example of a:
A. Third-class lever
B. Fixed pulley
C. Screw jack only
9. Which simple machine uses a grooved wheel and rope?
A. Wedge
B. Pulley
C. Inclined plane
10. A fixed pulley helps mainly by:
A. Removing the load completely
B. Changing mass into force
C. Changing the direction of effort
11. Which pulley can help us lift a load with less effort?
A. Movable pulley
B. Broken pulley
C. Pulley without rope
12. A ramp used for loading goods into a truck is an example of:
A. Wheel and axle
B. Inclined plane
C. Screw only
13. Compared with a short steep ramp, a long gentle ramp usually needs:
A. More effort always
B. No movement of the load
C. Less effort
14. Which simple machine is used in the blade of a knife?
A. Wedge
B. Pulley
C. Wheel and axle only
15. Which statement about a screw is correct?
A. It is only a smooth wheel
B. It is an inclined plane wrapped around a cylinder
C. It is only a straight rope
16. The spiral ridge on a screw is called its:
A. Fulcrum
B. Axle
C. Thread
17. Which pair correctly shows a wheel and axle?
A. Wheel and central rod
B. Rope and bucket only
C. Sharp blade and edge
18. A screwdriver mainly works as a:
A. Pulley
B. Wheel and axle
C. Inclined plane only
19. A compound machine is made up of:
A. Only one fixed point
B. Only one sharp edge
C. Two or more simple machines
20. Why are real machines not perfectly efficient?
A. Some energy is lost due to friction
B. They create unlimited energy
C. They remove all effort forever