why is the sky blue and the grass green?

Question

just looking for a good answer

Answer 1

Some of you guys or unbelievable, what sort of answer is 'because God made it that way'? This is the science section not the religious fanatics section. If you want to cut yourself off from all scientific advances then get the hell off the internet and go live in a cave.

Other (sensible) people have already covered all the bases here. Light refraction and light absorption are the key. With the sky it is light refraction (the angle of the sun to our atmosphere, hence red sunsets etc when the angle changes to our relative position). With the grass it is thanks to light absorption. Chlorophyll is the chemical compound that makes plants look green, it is also what fuels plants by converting sunlight to energy. It absorbs most of the spectrum but reflects green light.

And Rose's answer that the sky is blue because it reflects the sea is perhaps the cutest (and most naive) answer I have ever heard.

Answer 2

The sky is blue partly because air scatters short-wavelength light in preference to longer wavelengths. Where the sunlight is nearly tangent to the Earth's surface, the light's path through the atmosphere is so long that much of the blue and even yellow light is scattered out, leaving the sun rays and the clouds it illuminates red, at sunrise and sunset.

Scattering and absorption are major causes of the attenuation of radiation by the atmosphere. Scattering varies as a function of the ratio of the particle diameter to the wavelength of the radiation. When this ratio is less than about one-tenth, Rayleigh scattering occurs in which the scattering coefficient varies inversely as the fourth power of the wavelength. At larger values of the ratio of particle diameter to wavelength, the scattering varies in a complex fashion described, for spherical particles, by the Mie theory; at a ratio of the order of 10, the laws of geometric optics begin to apply.

Individual gas molecules are too small to scatter light effectively. However, in a gas, the molecules move more or less independently of each-other, unlike in liquids and solids where the density is determined the molecule's sizes. So the densities of gases, such as pure air, are subject to statistical fluctuations. Significant fluctuations are much more common on a small scale. It is mainly these density fluctuations on a small (tens of nanometers) scale that cause the sky to be blue.

Answer 3

The sky is blue and clumy with white array of clouds moving back and forth. Trying to get out of the way of others.And God made the sky blue to have daylight through the sunlight and dark clouds to give night at night with the moon, stars to give off a beautiful array of handy work that God made. The grass is green to bring the beautiful flowers , trees, and plants that grow veggies . crops and many other things.

Answer 4

Because it would be pretty dark all the time if the sky was green,and the main reason is because the man upstairs
made the sky and grass.

Answer 5

Did you know that when you look at something you're not actually seeing the object itself? It's true! What you really see is the light that is reflected off of that object. The sky is blue because of scattered light waves- only the blue ones reach our eyes. Grass is green because out of the spectrum of visible light waves/colors (red, orange, yellow, green, blue, indigo, violet; ROY G BIV for short), the green wavelengths are reflected to our eyes while all other colors are absorbed. White objects reflect all light wavelengths, and black objects absorb all light wavelengths. So while we may think in terms of "I see the red chair in the green grass," what we really see is the red and green light being reflected to our eyes.

Answer 6

the sky is blue because that's the color of light that's refracted the furthest from the white light of the sun, then the blue light reflects down to us giving us the impression that the sky is blue, grass is green because...well, depends on who you ask, you ask a biologist they'll say it's due to cytoplasm or chloroplasts or whatever the hell the green stuff is, you ask a physicist, and they'll say it's because that's the color of light that reflects off the grass, the grass absorbs all other colors of light.

Answer 7

sky is blue cuz it reflects off the ocean and also because the blue from light gets caught in the atmosphere

and grass is green because of the pigments and i forget what theyre called...

but leafs lose that pigment in winter which is why they change colors....

Answer 8

short solutions: Grass is eco-friendly using chlorophyll, the sky is blue because of the scattering of light by using air debris. long answer: colorings is how we decide on the gentle of distinctive wavelength. the colour of issues relies upon on which wavelengths of light they soak up and which wavelengths they reflect. Chlorophyll absorbs often blue and crimson areas of light spectrum, so we see the eco-friendly gentle that it reflects. it is why grass and tree leaves are eco-friendly. debris in the ambience are very very small, they are smaller than the wavelength of the blue area of light spectrum, yet are bigger than the wavelength of the crimson area. so they soak up the crimson colour and scatter/reflect the blue colour. it is why the sky on a sunny day looks blue.

Answer 9

some things are unexplainable...thats just the colors god chose.. i still dont see how some people think there is no god....everything man didnt make is co colorful and creative..man didnt make the moon and the night or the sun and the daylight..god did.. and as for man-made buildings,streets,etc...god gave them the brains and hands to do so..why do the EVER GREEN trees stay green all year through winter, fall ,etc?? GOD JUST WANTED IT THAT WAY

Answer 10

Because the White Man hasn't lived up to any of his treaties. And the water is still running.