Simple Machines
- Students should demonstrate understanding of the concepts of force, motion, energy, and work. They should know that force and work can be measured in standard units of Newtons (force) and joules (work).
- Students should know the definition of a simple machine; know that there are six kinds of simple machines; and demonstrate understanding of the reasons why simple machines are used.
- Students should demonstrate understanding of how the inclined plane and lever effect the amount of force required to move objects and perform work. They should be able to provide specific examples of inclined planes and levers in common use.
- Students should be able to describe how the motion of objects is effected by friction forces caused by air resistance or interactions between surface materials. Students should also be familiar with the idea of lubricants/lubrication.
- Students should demonstrate understanding of how the wheel and axles and pulley affect the amount of force required to move objects and perform work. Students should know that gears are special examples of wheels with interlocking teeth that transfer force. They should be able to provide specific examples of wheel and axles and pulleys in common use.
- Students should demonstrate understanding of how the wedge and screw effect the amount of force required to move objects and perform work. They should be able to provide specific examples of wedges and screws in common use.