Wheels and Levers Crossword Puzzle

QUESTIONS LIST:

• wheel : a circular object designed to rotate around an axle at the centre.
• roller : a long cylinder shaped object used to help move heavy loads.
• lever : a rigid bar resting on a pivot (fulcrum), used to help move a heavy or firmly fixed load with one end when pressure is applied to the other.
• gear : one of a set of toothed wheels that work together to transfer a force
• pulley : a wheel with a grooved rim around which a cord passes. it acts to change the direction of a force applied to the cord and is used to raise heavy weights.
• axle : the rod or pole that a wheel spins around.
• friction : the resistance that one surface or object encounters when moving over another.
• fulcrum : the point on which a lever rests or is supported.
• driven gear : the gear in a gear train rotating an external load.
• driving gear : the gear which is rotated by an external force.
• idler gear : a gear used to change the direction of motion of the driven gear.