Have you ever seen a glorious clear summer sky and wondered why it is so blue Sunlight is made up of all different colors of light When sunlight hits the earth’s atmosphere the dust and gas in the air scatter the light in all directions Blue light is scattered more than the others and that is what we see What is your favorite shade of blue Steel blue Powder blue Baby blue True blue 10
See that airplane way up in the sky Imagine looking out the window of that plane at the clouds below They always look white from above because they are made up of tiny drops of water or ice that reflect the sunlight hitting them That plane is making its own long thin cloud Its engine is burning jet fuel and the water vapor it produces turns into tiny ice crystals high in the atmosphere 13
