Why is the sky blue?

Why is the sky blue?

Light is a kind of energy that can travel through space. Light from the sun or a light bulb looks white, but it is really a mixture of many collars. The collars in white light are red, orange, yellow, green, blue and violet. You can see these colours when you look at a rainbow in the sky.
The sky is filled with air. Air is a mixture of tiny gas molecules and small bits of solid stuff, like dust.

As sunlight goes through the air, it bumps into the molecules and dust. When light hits a gas molecule, it may bounce off in a different direction. Some colours of light, like red and orange, pass straight through the air. But most of the blue light bounces off in all directions. In this way, the blue light gets scattered all around the sky.

When you look up, some of this blue light reaches your eyes from all over the sky. Since you see blue light from everywhere overhead, the sky looks blue.

The forecast for the next week said it will be perfect weather for clear skies, so I went out with the Hassleblad and my digital to find some interesting ways I could photograph the sky. 

I found this hard, as you cant focus on the sky, so I was finding near objects to frame the picture. I wanted to use ordinary settings you would see when looking up, such as trees and lampposts. Here are some I have selected that would like to try in the book. 

I liked this one, as I have saturated it which has made it look as if we are on holiday. However Im not sure a child would fine this stimulating.