ICSE Class 6 Physics - Simple Machines - Test 3 (Advanced)
1. A long crowbar is easier to use than a short crowbar because it gives a longer:
A. Load only
B. Effort arm
C. Sharp edge
2. To lift a heavy stone using a lever, the fulcrum should be placed:
A. Very far from the load
B. Only at the effort end
C. Close to the load
3. A long gentle ramp is easier to climb than a short steep ramp because it:
A. Reduces the effort needed
B. Removes the weight completely
C. Changes the box into a wheel
4. A simple machine may make work easier by making us apply less effort over a:
A. Zero distance
B. Longer distance
C. Smaller shadow
5. Which pulley system can help reduce the effort needed to lift a load?
A. Only a broken rope
B. Only a fixed wheel without rope
C. Movable pulley
6. In a fixed pulley, a person pulls the rope downward and the bucket moves upward. This shows that a fixed pulley changes the:
A. Direction of force
B. Colour of the bucket
C. Mass of water
7. Which simple tool is commonly an example of a first-class lever?
A. Fishing rod
B. Scissors
C. Bottle cap
8. In a wheelbarrow, the load is placed between the wheel and the handles. It works mainly as a:
A. Third-class lever
B. Screw only
C. Second-class lever
9. In a pair of tongs, the effort is applied between the fulcrum and the load. It is a:
A. Third-class lever
B. Fixed pulley
C. Inclined plane only
10. A sharp knife cuts more easily than a blunt knife because the sharp knife has:
A. No edge
B. A thinner cutting edge
C. More water inside it
11. When a wedge is pushed into wood, it helps split the wood by applying force:
A. Only upward into air
B. Only as sound
C. Sideways on the wood
12. A screw enters wood when turned because its thread helps it move:
A. Forward into the wood
B. Only sideways in air
C. Into a liquid state
13. A screwdriver helps turn a screw because its handle and shaft act as a:
A. Pulley
B. Wheel and axle
C. Ramp only
14. A tap with a bigger handle is easier to turn because the bigger handle:
A. Removes friction completely
B. Changes water into gas
C. Gives more turning effect
15. A bicycle is called a complex machine because it has:
A. Many simple machines working together
B. No moving parts
C. Only one screw and nothing else
16. It is easier to move a suitcase with wheels because wheels:
A. Make the suitcase weightless
B. Reduce friction by rolling
C. Turn the suitcase into a liquid
17. Mechanical advantage tells us how much a machine:
A. Changes colour
B. Measures temperature
C. Multiplies effort
18. If a machine has mechanical advantage greater than 1, it means:
A. The effort needed is less than the load
B. The machine does no useful work
C. The load becomes zero always
19. Which statement about simple machines is correct?
A. They create energy from nothing
B. They help us use force more conveniently
C. They remove all work completely
20. Real machines are not perfectly efficient mainly because some energy is lost due to:
A. Colour
B. Sound spelling
C. Friction