Why is the sky and H2O blue?

People say why is the Sky Blue The sky is not blue its has do with gas and Oxygen The light from the sun is a lot of colors.

 That is why some times we see "rainbows" in the sky.

 Lets say there is is a blue light and red light. Blue light has the shorter wave length red light has the longest wave length is  it how light Surface from the Earth's Atmosphere.

Blue Light is more strongly effected it''s scattered in all Direction as the red light red  is pass straight though the nadrin and oxygen.

People see more of the scattered light So that way the sky looks blue.

Sun Sets look red, orange,yellow or pink because the Blue light is scattered away.

If the Red Light has a shorter wave length and the blue has the longest one then people in the day might see red sky's more or if the blue light pass straight though the nadrin and oxygen.

Like if the Green light has a longest wave length and the yellow has the shorter wave length or if the green goes straight though the nadrin and oxygen and the yellow is strongly effected people are not going to see no more blue sky's any more they might see yellow sky's.

the Sky looks blue it has  to do something with the light. Other people might not know the answer I know a lot  of the answers. sun light is made up with all colors of light. similar thing is why is H20.