💨 风的形成：空气从高压跑向低压💨 Wind Formation: Air Runs from High to Low
上一片里，蓝蓝教你看懂了气压。这一片跟着蓝蓝追风：风到底是谁推起来的？Last leaf, Lanlan taught you to read air pressure. Now chase the wind with Lanlan: who pushes the air moving?
第 1 步：风是跑起来的空气Step 1: Wind is running air
先看最简单的：两地气压不一样，空气就会跑起来。Start simple: when two places differ in pressure, air starts running.
A 地气压高，空气又沉又重；B 地气压低，空气又轻又飘。重的一头推着空气跑向轻的一头，这就是风。两地差得越大，风跑得越快。Place A is high pressure — its air is heavy and sinking. Place B is low pressure — its air is light and rising. The heavy side pushes air toward the light side: that's wind. The bigger the gap, the faster it runs.
你可能会问：海边天天有风，也是气压差在推吗？You might ask: the seaside is windy every day — is that pressure pushing too?
第 2 步：海陆风天天换班Step 2: Sea and land breezes swap shifts
白天陆地热成低压，海上高压送来凉爽海风；夜晚陆地冷成高压，风又吹回大海。白天吹向陆地，夜晚吹向海洋，天天换班从不迟到。By day the land warms into low pressure, and high pressure over the sea sends a cool sea breeze in. At night the land cools into high pressure, and wind blows back out to sea. Toward land by day, toward sea by night — swapping shifts daily.
那比海陆风大一万倍的风，又长什么样？What about a wind ten thousand times bigger than a sea breeze?
第 3 步：季风和台风Step 3: Monsoons and typhoons
季风是最大的风：夏天吹向大陆带来雨水，冬天吹回海洋；台风是旋转的低压：四周空气旋转着冲向中心，越转越猛，北半球逆时针旋转。The monsoon is the biggest wind: toward the continent with rain in summer, back to the ocean in winter. A typhoon is a spinning low: surrounding air spirals into its eye, faster and fiercer — counterclockwise in the Northern Hemisphere.
🎮 你来当风向标（30 秒）🎮 Your turn: be the weathervane (30 seconds)
原理讲完了。先拖滑块亲手造一阵风，再接下面 4 关：海陆风方向和台风都要你来判断。Theory done. First drag the sliders to make your own wind, then take 4 levels: sea-breeze directions and the typhoon need your call.
一句话记住它：风 = 空气从高压跑向低压；气压差越大，风越强。Remember it in one line: wind = air running high to low; the bigger the gap, the stronger the wind.
风向永远高压→低压，差越大跑得越快Wind always flows high → low; bigger gap, faster run海陆风昼夜反转：白天吹向陆地、夜晚吹向海洋Sea and land breezes flip daily: toward land by day, toward sea by night季风是最大的风，台风是旋转着的低压Monsoon is the biggest wind; a typhoon is a spinning low
内容参考 OpenStax 等公开教材，多来源核对 · AI 生成、人工审核 · 发现错误欢迎指正，帮这片叶子长得更好。Based on OpenStax and other open textbooks, cross-checked across sources · AI-generated, human-reviewed · Spotted a mistake? Tell us — help this leaf grow.
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