I know the water's blue from the sky, but why is the sky blue?

Answer 1

The sky is blue because of a phenomenon called Rayleigh (Ray-lee) scattering. Because molecules of air have finite size and jitter and bump around, there are small differences in its density over very tiny distances. These difference in density tend to refract light, and the smaller the wavelength of light (the bluer) the smaller the inhomogeneity it takes to bend it. This causes blue light to be bent, or "scattered", and come to you from all directions in the sky while red light mostly comes at you straight from the Sun.

This is also why you can get a sunburn even if the Sun is behind a cloud (ultraviolet comes at you from "blue" sky too).

Incidentally, water is not blue from the sky. Water is blue from its own properties.

Answer 2

On a clear sunny day, the sky above us looks bright blue. In the evening, the sunset puts on a brilliant show of reds, pinks and oranges. Why is the sky blue? What makes the sunset red?

To answer these questions, we must learn about light, and the Earth's atmosphere.



THE ATMOSPHERE
The atmosphere is the mixture of gas molecules and other materials surrounding the earth. It is made mostly of the gases nitrogen (78%), and oxygen (21%). Argon gas and water (in the form of vapor, droplets and ice crystals) are the next most common things. There are also small amounts of other gases, plus many small solid particles, like dust, soot and ashes, pollen, and salt from the oceans.

The composition of the atmosphere varies, depending on your location, the weather, and many other things. There may be more water in the air after a rainstorm, or near the ocean. Volcanoes can put large amounts of dust particles high into the atmosphere. Pollution can add different gases or dust and soot.

The atmosphere is densest (thickest) at the bottom, near the Earth. It gradually thins out as you go higher and higher up. There is no sharp break between the atmosphere and space.



LIGHT WAVES
Light is a kind of energy that radiates, or travels, in waves. Many different kinds of energy travel in waves. For example, sound is a wave of vibrating air. Light is a wave of vibrating electric and magnetic fields. It is one small part of a larger range of vibrating electromagnetic fields. This range is called the electromagnetic spectrum.

Answer 3

The Sky looks blue because the light given from the sun is in the form of a spectrum. When the sun is high in the sky the red wavelengths in the spectrum are long and just pass srtaight through the atmosphere, whereas the wavelengths in the blue spectrum are very short and "scatter" when reflected off the molecules in the atmosphere. Therefore you can see the blue wavelengths from the sunlight and not the red wavelengths.

Answer 4

BLUE SKY The blue colour of the sky is brought about through the scattering of photo voltaic off the molecules of the ambience. This scattering, observed as Rayleigh scattering, is extra efficient at short wavelengths (the blue end of the seen spectrum). for this reason the person-friendly scattered right down to the earth at a tremendous perspective with note of to the route of the daylight's person-friendly is predominantly in the blue end of the spectrum. The solid wavelength dependence of Rayleigh scattering complements the quick wavelengths. intensity is INVERSLY proportional to fourth means of wavelength. note that the blue of the sky is extra saturated once you look added from the daylight. the just about white scattering close to the daylight will be attributed to MIE Scattering, which isn't very wavelength depending. OCEAN The sky condition can make a huge enormous difference, as a sparkling blue sky will be pondered through the water as a darker colour, while a cloudy sky will be pondered as a lighter colour. The intensity of the water alterations how a lot person-friendly is pondered from the sea bottom less than. For shallow water, consisting of close to a sea coast, the person-friendly pondered from the sand less than the water will make the water look lighter (consequently eco-friendly) than it is going to look if you're in deep water (the position little or no person-friendly is pondered from the bottom, ensuing in darkish blue water). person-friendly is likewise pondered from the interior of the water also, and the colour of even if is in the water (seaweed, soil, suspended sand, etc.) will impression the colour that you spot from the water. The sunlight perspective impacts the water colour also, as a lot less person-friendly is pondered from the exterior, bottom, and interior of the water close to noontime than is pondered for the time of early morning or nighttime. The water is in all probability to look darker round noontime. no longer all the oceans are even an same colour, or maybe an same colour in diverse places. frequently this has to do with what's in the water. close to shore, deep currents push up significant quantities of minerals from the seabeds, and microscopic existence florishes. In deeper seas, besides the very undeniable actuality that through no skill without existence, the algeal blooms are not any more contemporary, so there's a clearer view through the water. diverse oceans have diverse mineral content textile to boot, which skill some address an only about teal appearence, at the same time as others would look extra greyish in colour.

Answer 5

It's not blue. The "sky" isn't really there. The blue you see isn't a thing, it is the blackness of space filtered through several miles of air which is mainly nitrogen which reflects the color blue when viewed in the yellowish-white light from the sun. if the sky were a blue thing, it would be blue at night, too.

Answer 6

From the water! The sky and the water reflect off of each other due to the brightness of the sun! Didn't God design everything beautifully?!!!

Answer 7

The sky is not blue. It reflects blue. It is every color but blue.

Answer 8

because the water is blue

Answer 9

All colors have wavelengths that are difussed by oxygen and nitrogen.Since blue has the shortest wavelength it can difusse up to ten times more.

Answer 10

becuz thats how god made it! and would u rather the sky be purple or yellow or sumthin! blue just looks better! haha well in my opinion neway!!