Lever - a rod balanced on a fixed point that can help lift a heavy object up with less effort
Wheel and Axle - used to carry loads around easily
Inclined plane - any slope or ramp that makes it easier to lift something
Wedge - made of two inclined planes and used to push objects apart
Screw - an inclined plane wrapped into a spiral
Pulley - uses wheels and rope to raise, lower, or move a load
