The Secret of the Beautiful Blue Sky

The sun gives us bright light every day.

This light looks white to our eyes.

But white light has many colors inside it.

It has red, orange, yellow, green, and blue.

The Earth is covered by a lot of air.

The air has very small pieces of gas and dust.

Sunlight hits these small pieces in the sky.

Then, the colors in the light spread out.

Blue light moves in small, short waves.

It spreads more than the other colors.

This is why the sky looks blue to us.

Other colors like red go through the air easily.

You can see red and orange during a sunset.

But in the day, the blue color is everywhere.

Now you know the secret of the blue sky.