下雪是什么物理现象 冬天下雪是什么物理现象
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下雪属于凝华现象，云中的雨滴在遇到冷空气之后，会凝华成冰晶，这些冰晶在下落过程不断变大就形成了雪花。我国降雪集中在温带地区，在下雪天出门也一定要注意安全。绛旓細1. 闆姳鏄敱绌轰腑闄嶈惤鐨勫浐浣撴按缁勬垚鐨勶紝涓昏鐢卞啺鏅跺拰鍏惰仛鍚堢墿鏋勬垚锛岃繖绉嶈嚜鐒鐜拌薄鎴栨寚钀戒笅鐨勯洩鏄按鍦ㄥ浐鎬佺殑涓绉嶅舰寮忋2. 闆殑褰㈡垚闇瑕佸緢浣庣殑娓╁害鍜屾俯甯︽皵鏃嬬殑褰卞搷锛屽洜姝や簹鐑甫鍜岀儹甯﹀湴鍖涓嬮洩鐨勬満浼氳緝灏忋3. 闆姳鐨勫舰鎴愮粡鍘嗕簡鐗╃悊姝ラ锛氭按钂告皵鍑濈粨鎴愭按锛屽啀缁撳啺鎴愪负鍐版櫠銆4. 浜戞湹鐢卞皬姘存淮銆佸皬鍐版櫠鎴栦簩鑰...
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