A Complete Collection of 100000 Whys
Fav十万个为什么
为什么流星会划过天空？
1、流星是地球与太空中的小物体（如陨石或宇宙尘埃）相撞产生的现象。
2、当这些小物体进入地球大气层时，由于高速运动，与空气剧烈摩擦产生高温。
3、高温使小物体表面熔化并汽化，发出明亮的光芒，这就是我们看到的流星。
4、大多数流星体非常小，燃烧后迅速消失，因此通常只看到短暂的光迹。
5、偶尔，较大的流星体能穿透大气层，到达地面形成陨石，这是流星的残留部分。
总之，流星划过天空是由于太空小物体进入地球大气层时与空气摩擦产生的高温光芒现象。
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