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Science 7 12-3

QuestionAnswer
inclined plane flat, sloped surface
wedge thick at one ends, tapers to thin edge at other end
screw inclined plane wrapped around a cylinder
lever rigid bar free to pivot on fixed point
fulcrum fixed point lever pivots on
wheel and axle two cylinder objects fastened together that rotate on common axis
pulley grooved wheel with rope/cable wrapped around it
1st class lever change direction of input (can opener)
2nd class lever increase force (wheelbarrow. bottle opener)
3rd class lever increase distance (shovel, bat)
compound machine two or more simple machines
Created by: jmeager