The recurring boy and girl in raincoats watching raindrops fall and splash into puddles.

Big question

为什么雨会落下来？

Wèishénme yǔ huì luò xiàlái?

Why does rain fall?

雨会落下来，是因为云里的小水滴变重了，地球的拉力会把它们拉到地上。

Yǔ huì luò xiàlái, shì yīnwèi yún lǐ de xiǎo shuǐdī biàn zhòng le, dìqiú de lālì huì bǎ tāmen lā dào dìshàng.

云里面装着很多很多小水滴。越来越多的水聚在一起的时候，有些小水滴就会变得太重，没有办法继续待在天上。然后地球的拉力会把它们拉下来，我们就看到雨从天空落下来了。

Yún lǐmiàn zhuāngzhe hěn duō hěn duō xiǎo shuǐdī. Yuèláiyuè duō de shuǐ jù zài yìqǐ de shíhou, yǒuxiē xiǎo shuǐdī jiù huì biàn de tài zhòng, méiyǒu bànfǎ jìxù dāi zài tiān shàng. Ránhòu dìqiú de lālì huì bǎ tāmen lā xiàlái, wǒmen jiù kàndào yǔ cóng tiānkōng luò xiàlái le.

当雨点敲在窗户上，或者落进水坑里的时候，你会先听到哪一种声音呢？

Dāng yǔdiǎn qiāo zài chuānghu shàng, huòzhě luò jìn shuǐkēng lǐ de shíhou, nǐ huì xiān tīngdào nǎ yì zhǒng shēngyīn ne?

Rain falls when tiny drops in clouds get heavy and gravity pulls them down to the ground.

Clouds hold lots of tiny drops of water. When more and more water gathers together, some drops get too heavy to stay up in the air. Then gravity pulls them down, and we see rain falling from the sky.

When raindrops tap the window or splash in a puddle, which sound do you notice first?