Question: why is the sky blue?

Tom Snelling answered on 9 Nov 2019: last edited 9 Nov 2019 1:02 pm

This is a great question!

The light from the sun seems white to us, but white light is actually made up of all the colors of the spectrum: red, orange, yellow, green, blue, indigo and violet!

We see objects in colour because those objects absorb some of the colors in white light, and reflect the colours that we see! For example, grass reflects the colour green and absorbs all the other colours.

The sky is blue because it has to travel through Earth’s atmosphere, where there are lots of gases that absorb red, orange and yellow colours. Then, the blue light gets scattered all across the sky, which is what we see when we look into the sky!