Simple Machine - JSS2 Basic science Past Questions and Answers - page 2
Which simple machine is commonly used in cutting tools like knives?
Screw
Wedge
Inclined plane
Lever
Where would you typically find a lever in use?
In a doorstop
In a ramp
In a seesaw
In a screwdriver
What is the primary purpose of a screw?
To provide mechanical advantage
To cut or split objects
To fasten materials together
To lift heavy objects
Which simple machine is commonly used in vehicles for transportation?
Screw
Pulley
Wheel and axle
Wedge
What is the primary function of an inclined plane?
To lift heavy objects
To rotate objects
To change the direction of a force
To make it easier to move objects up or down
Which simple machine is commonly used in tools like crowbars?
Pulley
Lever
Screw
Inclined plane
Can you provide an example of a simple machine?
An example of a simple machine is a lever, like a seesaw at the playground.
How does a pulley work?
A pulley works by using a wheel with a groove to change the direction of a force, making it easier to lift objects.
What are some common uses of a wheel and axle?
Common uses of a wheel and axle include steering wheels in vehicles, doorknobs, and screwdrivers.
Can you explain the function of a wedge?
A wedge is primarily used to split objects apart, like a knife cutting through food or an axe splitting wood.