Bill Nye: Simple Machines

What simple machine helps us change the size and direction of forces?

• Battery

• Lamp

• Computer

• Pulley

What does a lever allow us to do?

• Paint pictures

• Cook food

• Change the size and direction of forces

• Play music

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What is the pivot or fulcrum of a lever?

• The middle part that allows one end to go down and the other to go up

• The end that goes up

• The end that goes down

• The part that holds the lever in the air

What kind of simple machine is a catapult?

• Pulley

• Wheel

• Ramp

• Lever

What are the three parts of a lever?

• Two batteries and a light

• Two wheels and an axle

• Two ropes and a pulley

• Two ends and a fulcrum

What simple machine is used to lift things easier?

• Refrigerator

• Television

• Pulley

• Computer

Tags

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What do gears do in a bicycle?

• Make it go slower

• Allow the rider to put out less effort for a longer distance

• Play music

• Make it look nice

What is a ramp used for?

• Making music

• Lifting things easier by walking a longer distance

• Storing food

• Heating up food

Tags

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What is a screw compared to?

• A wheel

• A pulley

• A lever

• A ramp wrapped around a stick

What does a prosthesis do?

• Lights up a room

• Acts as an arm or leg for someone who needs it

• Plays music

• Cooks food