《2025年阳光学业评价八年级英语上册沪教版》

The Magic of the Golden Spiral (黄金螺旋)
Have you ever wondered why seashells, typhoons (台风), and even galaxies (星系) share the same beautiful curved (曲线) shape? This pattern is called the Golden Spiral. It appears everywhere in our universe.
Mathematicians discovered that when you draw squares using Fibonacci numbers (1, 1, 2, 3, 5, 8...), connecting their corners creates this special spiral. Artists like Leonardo da Vinci used it in works such as the *Mona Lisa* to make it look pleasing.

In nature, the Golden Spiral helps living things grow faster. A shell grows in this spiral to keep its shape strong while using less energy. Sunflowers pack their seeds in golden spirals to fit the biggest number in their flower heads. Even huge typhoons are in spiral shapes because this pattern allows wind and clouds to move powerfully.
Scientists believe nature "chooses" this design because it balances space, strength, and growth perfectly. Next time you see a pinecone or a galaxy picture, count the spiral directions—you'll often find Fibonacci numbers!

Think: Why might the Golden Spiral be advantageous for both sunflowers and typhoons in nature?

答案： The Golden Spiral is advantageous because it helps sunflowers fit the most seeds in their flower heads. For typhoons, this spiral shape lets wind and clouds move powerfully. On the whole, the Golden Spiral balances space, strength, and growth well, so nature "chooses" it.