Simple Machines and Pulleys

What is a simple machine?

• A machine that makes it easier for us to do work

• A machine that is very complicated

• A machine that is used to lift heavy things

• A machine that is used to move things up and down

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What is the load in a pulley?

• The rope

• The wheel

• The thing being lifted

• The window

How does a pulley make lifting easier?

• By using a lever

• By using a ramp

• By using a wheel and rope

• By using a ladder

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What are some examples of big jobs that pulleys help with?

• Opening and closing window blinds

• Raising the flag on a flagpole

• Building skyscrapers

• Setting up a telescope

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Who helped in making this episode?

• Google Making Science

• Junior scientists

• Squeaks

• TheSciShow