Answer:
There are six types of simple machines:
-PULLEY
A pulley uses a wheel and a rope to move heavy objects. ex. Elevator, well, crane
-LEVER
A lever uses force to lift something. ex. bottle opener, seesaw, toilet flusher
-WHEEL AND AXLE
The axle is the rod that holds the wheels together. ex. rolling pin, ferris wheel
-INCLINED PLANE
is a slanted surface that can be used to lower or raise things. An inclined plane does not move. ex. wheel chair ramp, boat ramp
-WEDGE
a wedge us two inclined plane that are back to back.
Wedges hold things together or split things apart. ex. a fork and a knife, screw driver
-SCREW
a screw is an inclined plane that is wrapped around a cylinder with a flat head on one end. This head is used to turn or drive the screw into something. ex. swivel tool, bottle lids, corkscrew
