Six Simple Machines

What is a machine?

• A device that helps us to do work

• A tool used only for cutting

• A type of computer

• A vehicle for transportation

What does work result from?

• Electrical energy

• Heat production

• A force moving an object

• Chemical reactions

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What is a simple machine?

• A machine that requires electricity

• A machine used in simple tasks

• A machine with a few or no moving parts

• A machine with complex parts

How many kinds of simple machines are there?

• Three

• Six

• Eight

• Ten

What is an inclined plane?

• A flat surface at an angle to lift objects

• A machine that uses gears

• A type of lever

• A circular object that rotates

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What does a wedge do?

• Cuts or splits objects apart

• Lifts objects

• Moves objects to a higher place

• Turns objects

What is a screw adapted from?

• A lever

• An inclined plane

• A pulley

• A wheel and axle

What is a lever?

• A device that lifts water

• A rigid object that pivots around a fulcrum

• A type of inclined plane

• A simple machine that uses electricity

What is the purpose of a wheel and axle?

• To move objects in a straight line

• To hold things together

• To lift heavy loads with less effort

• To cut objects

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How does a pulley make work easier?

• By changing the direction of a force

• By decreasing the distance

• By using electricity

• By cutting objects

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