Simple Machines

A circular device with a rod through its center

• wheel and axle

• wedge

• work

• inclined plane

A slanting surface that connects a lower level to a higher level

• inclined plane

• lever

• pulley

• wedge

A fixed point upon which a lever rotates

• fulcrum

• inclined plane

• wedge

• pulley

A stiff bar that rests on a support that is used to raise and lower a load

• pulley

• work

• wedge

• lever

Force that moves an object

• work

• wedge

• pulley

• lever

An inclined plane around a rod

• screw

• pulley

• fulcrum

• wedge

An object with at least one slanting side ending in a sharp edge, which cuts material apart

• wedge

• wheel and axle

• fulcrum

• inclined plane

Make work easier by changing direction and amount of force needed to lift or move objects

• simple machines

• friction

• motion

• acceleration

A grooved wheel with a rope or cable around it

• pulley

• wheel and axle

• lever

• fulcrum

Which of these is an example of a wedge?

• skateboard

• stairs

• broom

• butter knife