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UNIT 5 - WHY ARE WHEELS IMPORTANT?
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Look at the picture. What is this part of the wheel?
Rim
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___________ is a particular form of power that makes a vehicle move.
Traction
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One of the thin bars or long, straight pieces of metal that connect the centre of a wheel to its outer edge, for example on a bicycle.
Spoke
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Look! The man is _________ the coffee beans with his hands.
grinding
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The concrete is strengthened with steel ________.
rod
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To pull something/somebody with a lot of effort.
Haul
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The Earth _______ around the Sun.
rotates
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What do you see in the picture? What is its name?
Axle
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The ______ on a vehicle are a device for changing the rate at which energy is changed into motion.
gears
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