Which Simple Machine Can do That?

You need to lift a load. What simple machine can do that? Pulley, inclined plane, lever

You need to cut something. What simple machine can do that? wedge

You need something to turn or roll. What simple machine can do that? Wheel and axle

You need to hold something together or in place You need to hold something together or in place. What simple machine can do that? screw

Compound Machines

COMPOUND MACHINES A compound machine is a combination of two or more simple machines that operate together. 7

COMPOUND MACHINES Many familiar compound machines, such as a car, a washing machine, or a clock, are combinations of hundreds or thousands of simple machines. 8

Compound Machine Corkscrew Wedge Screw Lever Wheel and Axle

Compound Machine: Stapler Simple machines in a stapler: Wedge Lever

Compound Machine: Scissors Simple machines in a pair of scissors: Wedge Lever

Compound Machine: Nail Clippers Simple machines in nail clippers: Wedge Lever

Compound Machine: Bicycle Simple machines in a bicycle: Lever (hand brake) Lever (pedal) Wheel and axle (pedal) Pulley system (chain/gears)

Compound Machine: Pizza Cutter Simple machines in a pizza cutter: Wedge Lever Wheel and axle

Compound Machine: Wheel barrow Simple machines in a wheel barrow: Wheel & Axle Lever

Compound Machine: Bulldozer Simple machines in a bulldozer: Wedge Lever Wheel and axle(s)