天空为什么是蓝的

一位好奇的主持人指向明亮的蓝天，一束发光的阳光在空中散射成蓝色光线，旁边漂浮着一个小小的棱镜和空气分子示意图。欢快的白昼配色。顶部是加粗标题「天空为什么是蓝的？」，白字配天蓝描边，一支绿箭头跟随散射的光线，配一个灯泡。简单的科学标签。明亮、勾起好奇，强对比的亲子科普氛围。

A curious host points up at a bright blue sky where a glowing beam of sunlight splits into scattering blue light rays, a small diagram of a prism and air molecules floating beside them. Cheerful daytime palette. Bold text 'WHY IS THE SKY BLUE?' in white with a sky-blue outline across the top, a green arrow following the scattered light and a lightbulb. Simple science labels. Bright, curious, high-contrast kid-friendly explainer energy.