Simple Machine

Those device that makes our work easier and faster are called,...........

..

• Machine

• Simple machine

• Complex machine

• Mobile phone

A fishing pole is an example of a compound machine. What simple machines are used to make up this compound machine?

• lever, wheel and axle, pulley
• wheel and axle, inclined plane, pulley
• wheel and axle, pulley, inclined plane

Stairs

• wedge
• pulley
• inclined plane
• wheel and axle

This device

• wedge
• lever
• incline plane
• wheel and axle

Name this simple machine.

• Lever
• Wedge
• Pulley
• Inclined Plane

Name this simple machine. 

• Wheel and Axle
• Lever
• Pulley
• Wedge

Name this simple machine. 

• Inclined Plane
• Lever
• Pulley
• Wedge

Which of the following does a simple machine do?

• allows the users to apply less force over a longer distance
• reduce the amount of force needed to do work
• change the direction of the applied force
• all of the above

Which is an example of how a simple machine changes the direction of a force?

• using a rope to pull a box up a hill
• using a rope and pulley to raise a flag
• using a slide to push a box down steps
• using an axle and wheel to make a wagon move forward

Which statement correctly explains a compound machine?

• A compound machine is made up of one or more simple machines
• A compound machine is made up of two or more simple machines.
• A screw is a type of inclined plane.
• None of the above