Due to thermal expansion, how much can the Eiffel Tower grow in height during the hot summer months?
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Because it is made of puddle iron, the tower reacts strongly to temperature changes. Summer heat causes the metal to expand, making the structure grow by up to 15 centimeters and tilt slightly away from the sun. In winter, the cold causes the metal to contract and shrink.
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Source: Wikipedia (CC BY-SA)
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