Question

The Eiffel tower is about six inches taller in summer than in the winter.Why? a) Because steel and iron contract when heated. b) Because steel and iron expand when heated. c) Because steel and iron expand when cold.​

Answer 1

Answer:

The Eiffel Tower gets taller by up to 6 inches during the summer, when the temperature reaches as high as 40°C. ... It also causes the top of the tower to tilt away from the sun by up to 7 inches. That's because Steel expands in hot and contracts in cold. So, The Eiffel Tower is six inches taller in summer than winter.

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Answer 2

(b) Because steel and iron expand when heated.

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