MACHINES AND INVENTIONS UNIT 6

Machines are instruments that...

• help us to travel faster

• allow us to play videogames

• help us to write better

• make our work easier

Complex machines have...

• Only one or two parts

• More than two parts

• Only four parts

• Between five or six parts

Screwdriver is an example of...

• Complex machine

• Simple machine

A washing machine or a diswaher are exaples of simple machines

• TRUE

• FALSE

A hairdryer or a watch are examples of...

• Simple machines

• Complex machines

Which of there machines don't work with electricity?

• electric drill

• dishwaher

• sharpener

• laptop

Most of ways of transports like planes, trains or cars need burn fuels to move

• TRUE

• FALSE

Which of the following objects don't work with energy from people?

• Bottle opener

• Watch

• Pliers

• Hammer

A light bulb uses...

• Electricity

• Human energy

• Fuel

• Solar energy

Who was the inventor of the early printing press?

• Thomas Edison

• Marconi

• Johannes Gutenberg

• Alexander Graham Bell