1) Which statement is true about this sharpener? a) It is a complex machine. b) It has gears and a wheel and axle. c) It is a type oftransport. d) It is a simple machine. 2) Why are these tools complex machines? a) The tools are made of a metal b) The tools are made of forces. c) The tools are made of plastic. d) The tools are made by combining simple machines. 3) Which complex machine is made from the combination of the two simple machines? a) Wristwatch b) Nail clipper c) Egg beater d) Pencil sharpener 4) What is this hammer used as? a) A Gear b) A Lever c) A Screw d) A Wedge 5) What would happen if machines had never been invented? a) Humans would live more comfortably b) Humans would need more time to finish work 6) What are the simple machines in the foldable ladder? a) lever and screw b) lever and gear c) screw and inclined plane d) gear and inclined plane 7) What are the simple machines you would find in a wheel barrow? a) wheel and axle, pulley b) wheel and axle, wedge c) wheel and axle, lever d) screw, wedge

Simple Machine vs Complex Machine

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