why is the sky blue , the grass green ,?

Answer 1

WHY IS THE SKY BLUE?
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.
Gas molecules are smaller than the wavelength of visible light. If light bumps into them, it acts differently. When light hits a gas molecule, some of it may get absorbed. After awhile, the molecule radiates (releases, or gives off) the light in a different direction. The color that is radiated is the same color that was absorbed. The different colors of light are affected differently. All of the colors can be absorbed. But the higher frequencies (blues) are absorbed more often than the lower frequencies (reds). This process is called Rayleigh scattering. (It is named after Lord John Rayleigh, an English physicist, who first described it in the 1870's.)
The blue color of the sky is due to Rayleigh scattering. As light moves through the atmosphere, most of the longer wavelengths pass straight through. Little of the red, orange and yellow light is affected by the air.
However, much of the shorter wavelength light is absorbed by the gas molecules. The absorbed blue light is then radiated in different directions. It gets scattered all around the sky. Whichever direction you look, some of this scattered blue light reaches you. Since you see the blue light from everywhere overhead, the sky looks blue.
WHY IS GRASS GREEN?
Grass and most other plants are green because they contain a pigment
known as chlorophyll. The chlorophyll is used in the process of
photosynthesis where a plant produces sugar in the presence of
sunlight. In fact the word 'photosynthesis' means literally to
synthesize or 'make' from light (photo).
Grass appears green because all of the colors in the rainbow are absorbed into the leaves of the grass except green.

Answer 2

Simple answer is
As Light from the sun or other object (which consists of a mixture of all colours of light including invisible ones)hits the item in question it causes the molecules inside the item to absorb some of this light energy and reflect(or resonate out to be precise) others. The reflection is what you see the absorbed light is what you don't, thus as different compounds or collections of compounds change from item to item this changes the colour of different things (grass is green and absorbs all but the green tones sky is blue etc)

Answer 3

Grass green because the chemicals in the plant turn it into that colour

The sky is blue because it is the sight of light scattering through nitrogen molecules.


:)

Answer 4

The sun's light is white.
White is a mixture of all the colours of the rainbow.
Sunlight striking the Earths atmosphere is partially split so that blue light is directed downwards at an angle and we see it as blue.

Grass absorbs light in order to photosynthesise. the part of the light that is not absorbed is green. That is reflected off the blades of grass and we see it as green.

Our eyes have three types of light sensors in the retina.
One for blue, one for green and one for yellow.

Answer 5

short solutions: Grass is eco-friendly through chlorophyll, the sky is blue through scattering of light by using air debris. long answer: colorings is how we go with the sunshine of diverse wavelength. the colour of issues relies upon on which wavelengths of light they take up and which wavelengths they mirror. Chlorophyll absorbs customarily blue and pink aspects of light spectrum, so we see the eco-friendly easy that it reflects. it fairly is why grass and tree leaves are eco-friendly. debris interior the ambience are very very small, they're smaller than the wavelength of the blue area of light spectrum, yet are larger than the wavelength of the pink area. so as that they take up the pink shade and scatter/mirror the blue shade. it fairly is why the sky on a sunny day looks blue.

Answer 6

The sky is blue because the atmosphere scatters blue light more than it scatters red. That is also the reason why sunsets are red.

Grass is green because of chlorophyll that is used in photosynthesis.

Answer 7

Grass is green because of chlorophyll produced by photosynthesis.

Answer 8

Cos you would have a problem mowing the sky!!!

Answer 9

Rayleigh scattering and chlorophyll. Now go and do likewise.

Answer 10

They aren't. Adjust your television screen.