Why is the sky blue?

Answer 1

A clear cloudless day-time sky is blue because molecules in the air scatter blue light from the sun more than they scatter red light. When we look towards the sun at sunset, we see red and orange colours because the blue light has been scattered out and away from the line of sight.The white light from the sun is a mixture of all colours of the rainbow. This was demonstrated by Isaac Newton, who used a prism to separate the different colours and so form a spectrum. The colours of light are distinguished by their different wavelengths. The visible part of the spectrum ranges from red light with a wavelength of about 720 nm, to violet with a wavelength of about 380 nm, with orange, yellow, green, blue and indigo between. The three different types of colour receptors in the retina of the human eye respond most strongly to red, green and blue wavelengths, giving us our colour vision.

Answer 2

I agree with the Sin gurl... The sky is blue because the sunlight is dispersed into blue light by the fine particles of dust in the air, much like shining sunlight through a glass prism. On days of heavy fires or other atmospheric pollution sunsets/sunrises are much more vigourously red/orange.
Water is actually colourless, the ocean is generally blue (when not polluted by its own set of contaminants) because it reflects the colour of the sky.

Answer 3

Several reasons. Ozone is blueish. Water is too. So this is the reflection of the sun light.

Answer 4

because of the sun if u traveled up there it would be black