- lever: a straight rod or board that pivots on a point called a fulcrum which can be moved depending weight of the object and the force needed; used to make lifting easier.
- wheel & axle: a set of wheels connected by a smaller cylinder, called an axle, allowing the set to turn; makes moving objects easier
- wedge: two inclined planes joined back to back that fit into crevices and are used to split things in two
- inclined plane: a sloping surface, used to alter the effort and distance involved in doing work, such as lifting loads
- pulley: a wheel with a groove around the outside edge where a rope is placed and is used to make pulling objects upward easier
- screw: an inclined place wrapped around a cylinder which easily moves through material such as wood
Parent Tip: Review the logic above to help your child master the concept of simple machines matching worksheet.
