| A | B |
|---|
| ramp | a slope or inclined plane |
| gear | a set a toothed wheels that work together to transmit and control motion from an engine. |
| lever | a simple machine consisting of a rigid bar pivoted about a fulcrum which can be acted upon by a force to move a load. |
| pulley | a simple machine consisting of a rope passing over a wheel. A load is applied at one end and an effort at the other. |
| mechanical | working or produced by machines |
| magnifier | appears larger than it is |
| fulcrum | the point around which a lever turns |
| wedge | a piece of wood or metal that is driven between two objects to secure or separate them |
| screw | a thin cylinder or cone with a spiral ridge or thread running around the inside or the outside |
| multiplier | an instrument for increasing by repetition the intensity of a current, force |
| wheel | a circular frame or disc arranged to revolve on an axle and used to facilitate the motion of a vehicle |
| axle | a rod through the centre of a wheel, on which the wheel turns on. |
| spindle | a pin or axis on which something revolves |
| torque | the moment of a system of forces tending to cause rotation |
| pinion | a small cog-wheel engaging with a larger one |
| friction | the force that works against two surfaces moving over each other |
| efficiency | the ratio of useful work performed to the total energy expended |
| tackle | a mechanism for lifting weights |
| hoist | raise by using ropes and pulleys |
| indigenous | belonging to the original inhabitants of a particular land or region |
| spear | a thrusting or throwing weapon with a pointed steel tip and a long shaft |
| boomerang | a curved flat hardwood missile used by Aboriginals to kill prey, and often of a kind able to return in flight to the thrower |
