The recurring girl playing among red, gold, and orange autumn leaves as they drift down around her.

Big question

为什么叶子会变颜色？

Wèishénme yèzi huì biàn yánsè?

Why do leaves change colors?

树准备迎接冷一点的天气时，叶子就会慢慢变颜色。

Shù zhǔnbèi yíngjiē lěng yìdiǎn de tiānqì shí, yèzi jiù huì mànmàn biàn yánsè.

天气暖的时候，叶子一直忙着帮树工作，所以常常绿绿的。等白天变短、天气变凉，树慢下来，黄的、红的、橙的颜色就慢慢跑出来了。

Tiānqì nuǎn de shíhou, yèzi yìzhí mángzhe bāng shù gōngzuò, suǒyǐ chángcháng lǜlǜ de. Děng báitiān biǎn duǎn, tiānqì biàn liáng, shù màn xiàlái, huáng de, hóng de, chéng de yánsè jiù mànmàn pǎo chūlái le.

今天在外面，你能找到什么颜色的叶子呢？

Jīntiān zài wàimiàn, nǐ néng zhǎodào shénme yánsè de yèzi ne?

Leaves change color when trees get ready for colder weather.

In warm months, leaves work hard and look very green. When the days get shorter and colder, trees slow down, and yellows, reds, and oranges begin to show.

What leaf colors can you find outside today?