Sometime the ky i full of white cloud. But ometime cloud look black. Where doe the colour come from?
Cloud are made of water or ice. But the drop of water in the cloud are not red or orange. The un make the colour in the cloud. Sunhine change colour a it goe through the drop of water in the cloud.
Cloud look dark becaue they are o thick. Lot of drop of water make a cloud. Very little unhine can go through. Dut alo make cloud dark. Dut from the ground i blown into the ky. and become part of the cloud.
The colour of the cloud tell about the wether.
有时天空布满了白云，可是有时云看起来是黑的。这些颜色是从哪里来的呢?
云是由水和冰组成的。可是云中的水滴并不是红色或橘黄的。太阳使云有了颜色。当阳光穿过云中的水滴是改变了颜色。
云看起来暗是因为云层太厚了。许多水滴组成了云，很少的阳光能穿透云层。尘埃也能使云变暗。地面上的尘埃被吹到空中时，它就成了云的一部分。
通过云彩的颜色能预报天气。