31 mayo, 2017 por englishvillaeuropa
axle, chain, energy, gear, inclined plane, inventions, lever, motor, pedal, pulley, ramp, wheel, simple, complex, apply, communicate, cool, heat, invent, process, information, transport, work
- Machines make work easier.
- They work using different types of energy.
- Simple machines have one part or a few parts.
- Complex machines are made up of many operating parts.