Simple Machines

1. Wedge

1.1. A wedge is a sharp simple machine, for example a knife is a wedge! Scissors are a lever and a wedge! Because when you push down on the handle the wedge comes up.

2. Screw

2.1. A screw is like a wedge because it goes through things,but it twirls round and round aswell as going down.

3. Lever

3.1. Levers are things that push down and something else goes up,for example: . a see saw . a knife (depends how you use the knife).