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Name: Mary B Olijr
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Why are thunder clouds a dark color?

Thunder clouds are very thick - they tower up to eight or nine miles from the earth's surface. They appear dark on the bottom because light cannot get through from the top all the way down to the bottom, which is the part you see when you look up at them. If you take a sheet of paper and put it against a window, you can see light through the paper. If you put another sheet of paper on top you cannot see as much light as before, and if you put a thick pad of paper up to the window, you cannot see any light at all - the side you see is completely dark. It is the same with clouds: thin ones are light but thick ones are dark.


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