When you were a child have you ever wondered why the sky is blue why not other colours?. Plenty of children may have asked their parents about why the sky is blue. All children must have wondered their whole life about that question. In the following paragraphs I will be explaining to you why the sky is blue.
Firstly to understand why the sky is blue you need to know that the light from the sun is not made up of only one colour. As people think that the light that comes from the sun is white but the light that comes from the sun is made up of all the colours of the rainbow. The light energy travels in the waves, The waves can be long or short and an example of this is that blue light waves are shorter than red waves
The air around the earth is called the atmosphere; this is made up of millions of tiny oxygen and nitrogen molecules. When the sun's light is travelling to earth it must pass through the atmosphere. Light will always have to go straight ways unless if something causes it to bend,reflect or scatter. As the light from the sun shines into the atmosphere, most of the colours are able to reach the earth's surface undisturbed.
However, Blue light is scattered in all directions by the tiny molecules of air in earth's atmosphere. Blue is scattered more than the other colours because it travels in shorter waves. The blue light then bounces around the atmosphere so wherever you look the sky will appear blue. The other colours like red,orange and yellow also bounce molecules, but the blue light is scattered the strongest.
Overall the sky is blue because when the molecules in the atmosphere scatter the sun’s light as it travels down to earth. Closer to the horizon, the sky fades to a lighter blue or white. This is because as the light gets closer to earth has travelled further and the light