Natural Science Unit 6

A simple machine...

• has moving parts

• has few or no moving parts

• doesn't have parts

A complex machine...

• has few parts

• has several parts

• doesn't have simple machines

The ..........................is a tilted surface which goes from a low point to a high point.

• pulley

• inclined plane

• lever

A......is a simple machine which is made up of a wheel and a rope or cable.

• Inclined plane

• lever

• Pulley

A.......is made up of a rigid bar and a fulcrum.

• pulley

• lever

The..........................screw is made up of a.............inside a hollow pipe.

• Newton

• Archimedes

.................invented the three laws of motion.

• Archimedes

• I.Newton

The....................claw was a weapon created to defend the city of Syracuse from Roman invaders.

• Archimedes

• Newton

The wheel was invented in...

• 1000 BC

• 200 BC

• 3500 BC

The light bulb was invented by....

• Newton

• Archimedes

• Thomas Edison