Tools and Machines

What are machines? Machines are instruments which help us perform a job while we use less effort and we can do the job faster.  Machines make our life easier.

• Simple machines. Simple machines have got few parts. An example of a simple machine is a _______.

• Complex machines: Complex machines have a lot of parts. An example of a complex machine is a _______. 

Their power source can be: Human energy  (scissors), electricity (hoover) or burning fuel (car).