1) What is complex machine? a) Is a tool that has one motor b) Is a tool that has more than one simple machine c) Is a tool that make our life easier d) Is a tool that make our life more burden 2) Give simple machines in bicycle. a) Gear, screw, wheel and axle b) Lever, pulley c) Inclined plane, lever d) Gear, pulley 3) Which of the following is complex machine? a) b) c) d) 4) Give simple machines in scissors. a) inclined plane, pulley b) gear, lever c) wedge, lever d) pulley, wheel and axle 5) Which of the following is complex machine? a) b) c) d) 6) Give simple machines in wheelbarrow. a) Lever, screw, wheel and axle b) Pulley, screw c) Wedge, lever d) Wedge, pulley 7) Give simple machines in nail clipper. a) Inclined plane, pulley b) Pulley, wedge c) Lever, inclined plane d) Lever, wedge 8) Give simple machines in mechanical pencil. a) wedge, wheel and axle b) screw, inclined plane c) pulley, screw d) inclined plane, pulley 9) Give simple machine in shear. a) inclined plane, screw b) pulley, screw c) lever, pulley d) screw, wedge 10) Give simple machines in escalator. a) screw, wedge b) wedge, lever c) pulley, inclined plane d) wheel and axle, wedge

Complex machine

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