A Complete Collection of 100000 Whys
Fav十万个为什么
为什么有时候会下雪？
1、雪花形成于高空中的云层，当云层中的水蒸气遇到低温时，会凝结成小冰晶。
2、这些小冰晶在云层中不断碰撞、合并，逐渐变大，形成雪花。
3、当雪花足够重时，它们就会从云层中掉落下来，成为我们看到的雪。
4、下雪需要特定的气象条件，比如温度低于冰点且空气湿度足够高。
5、不同地区的气候和季节变化会影响下雪的频率和雪量。
总之，下雪是水蒸气在高空中凝结成冰晶，并在特定气象条件下掉落的结果。
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