why would particles from volcanic eruption make suset and sunrise more red?
85611
The sunlight at sunset and sunrise is considerably more orange and/or red than it is when the sunlight is directly overhead. This is because the sunlight has passed through more air, which contains nitrogen and oxygen molecules. These molecules are the right size to scatter away the short wavelengths of the sunlight (the blue end of the spectrum), leaving the long wavelength, red light. This is known as Rayleight-Tyndall scattering. If there are a lot of dust particles or water droplets in the air, these are considerably larger than the nitrogen and oxygen molecules, and they will reflect the red and orange colors of the sunlight, making the sunrises and sunsets more red.
575716
A red sky as night means a freshly breaking storm moving out of the area and clear weather behind it, Red in the morning indicates an approaching storm. Storms cause extremely rough water and bad conditions.
1057033
It probably has to do with a mix of light pollution and regular pollution
1070192
Volcanoes can put large amounts of volcanic ash\ninto the atmosphere.  This shades the earth,\nreducing the energy input from sunlight and thus\ncauses cooling.  The eruption of the volcano\nKrakatau in Indonesia in 1883 cooled the earth\nslightly.  The Tambora eruption, also in Indonesia,\nin 1815 produced so much ash that the following\nyear was known as the year without a summer.\nThere were very late frosts in Europe and other\ntemperate regions, crop failures and famine.  Such\neruptions can occur anytime, but fortunately are\nrare.
28745
yes and it is due to erupt
105603
WHY IS THE SUNSET RED?\nAs the sun begins to set, the light must travel farther through the atmosphere before it gets to you. More of the light is reflected and scattered. As less reaches you directly, the sun appears less bright. The color of the sun itself appears to change, first to orange and then to red. This is because even more of the short wavelength blues and greens are now scattered. Only the longer wavelengths are left in the direct beam that reaches your eyes.
414202
(m)\n\nAs the sun begins to set, the light must travel farther through the atmosphere before it gets to you. More of the light is reflected and scattered. As less reaches you directly, the sun appears less bright. The color of the sun itself appears to change, first to orange and then to red. This is because even more of the short wavelength blues and greens are now scattered. Only the longer wavelengths are left in the direct beam that reaches your eyes\n\nThe sky around the setting sun may take on many colors. The most spectacular shows occur when the air contains many small particles of dust or water. These particles reflect light in all directions. Then, as some of the light heads towards you, different amounts of the shorter wavelength colors are scattered out. You see the longer wavelengths, and the sky appears red, pink or orange
964591
It's an iron oxide and it forms in an oxidising environment. Rich deposits may be the result of weathering, or precipitation out of oxygen-rich surface water or oxygen-rich water in hydrothermal veins.\n\nAs to why it is sometimes red and sometimes metallic-grey I'd say it is probably due to the size of the crystals. When it is ground up fine, it is always red. The smaller grains scatter red light.
562590
WHY IS THE SUNSET RED?   \n\nAs the sun begins to set, the light must travel farther through the atmosphere before it gets to you. More of the light is reflected  and scattered. As less reaches you directly, the sun appears less bright. The color of the sun itself appears to change, first to  orange and then to red. This is because even more of the short wavelength blues and greens are now scattered. Only the longer  wavelengths are left in the direct beam that reaches your eyes.   \n\nThe sky around the setting sun may take on many colors. The most spectacular shows occur when the air contains many small particles of dust or water. These particles reflect light in all directions. Then, as some of the light heads towards you, different amounts of the shorter wavelength colors are scattered out. You see the longer wavelengths, and the sky appears red, pink or orange.
186237
It depends on what planets you are talking about...  Mars appears red primarily because of the makeup of the planet's surface itself...   The outer planets like Neptune appear to have the colour they do because of the atmospheric makeup (gases surrounding it)
389534
it is because of tyndall effect as the blue clour as a longer wave length in the spectrum of colours it gets scaterd more in the sky \n \n     \nmxwltan\n6 minutes ago\n\n\n \n The Earth's sky is blue because the air molecules (largely nitrogen\nand oxygen) are much smaller than the wavelength of light. When light\nencounters particles much smaller than its wavelength, the scattered\nintensity is inversely proportional to the 4'th power of the\nwavelength. This is called "Rayleigh scattering," and it means that\nhalf the wavelength is scattered with 2**4 = 16 times more intensity.\nThat's why the sky appears blue: the blue light is scattered some 16\ntimes more strongly than the red light. Rayleigh scattering is also\nthe reason why the setting Sun appears red: the blue light has been\nscattered away from the direct sunlight.\n\nThus, if the atmosphere of another planet is composed of a transparent\ngas or gases whose molecules are much smaller than the wavelength of\nlight, we would, in general, also expect the sky on that planet to\nhave a blue color.\n\nIf you want another color of the sky, you need bigger particles in the\nair. You need something bigger than molecules in the air---dust.\n\nDust particles can be many times larger than air molecules but still\nsmall enough to not fall out to the ground. If the dust particles are\nmuch larger than the wavelength of light, the scattered light will be\nneutral in color (i.e., white or gray)---this also happens in clouds\nhere on Earth, which consist of water droplets. If the dust particles\nare of approximately the same size as the wavelength of light, the\nsituation gets complex, and all sorts of interesting scattering\nphenomena may happen. This happens here on Earth from time to time,\nparticularly in desert areas, where the sky may appear white, brown,\nor some other color. Dust is also responsible for the pinkish sky on\nMars, as seen in the photographs returned from the Viking landers.\n\nIf the atmosphere contains lots of dust, the direct light from the Sun\nor Moon may occasionally get some quite unusual color. Sometimes,\ngreen and blue moons have been reported. These phenomena are quite\nrare though---they happen only "once in a blue moon...." :) The dust\nresponsible for these unusual color phenomena is most often volcanic\nin origin. When El Chicon erupted in 1982, this caused unusually\nstrongly colored sunsets in equatorial areas for more than one year.\nThe much bigger volcanic explosion at Krakatoa, some 110 years ago,\ncaused green and blue moons worldwide for a few years.\n\nOne possible exception to the above discussion is if the clouds on the\nplanet are composed of a strongly colored chemical. This might occur\non Jupiter, where the clouds are thought to contain sulfur, phosphorus,\nand/or various organic chemicals.\n\nIt's also worth pointing out that the light of the planet's primary is\nquite insignificant. Our eyes are highly adaptable to the dominating\nillumination and perceive it as "white," within a quite wide range of\npossible colors. During daytime, we perceive the light from the Sun\n(6000 K) as white, and at night we perceive the light from our\nincandescent lamps (2800 K, like a late, cool M star) as white. Only\nif we put these two lights side-by-side, at comparable intensities,\nwill we perceive a clear color difference.\n\nIf the Sun was a hot star (say of spectral type B), it's likely we\nstill would perceive its light as "white" and the sky's color as blue
43825
When the sun is directly overhead, the sunlight has to only pass through a few miles worth of thick atmosphere.  But when the sun is close to the horizon (at sunrise or sunset) the light goes a much longer distance through the atmosphere.  This causes attenuation of the shorter wavelengths (blue - this is why the sky is blue at other times of the day) leaving only the longer wavelengths like orange and red to reach us.  Having clouds in the sky and a variety of other atmospheric effects also contributes to the play of colors.
227364
You must realize that this has been asked over 500 times here. Surely when you asked this question you were notified. Why didn't you look at some of those previous questions and answers? I probably have answered this 50 times myself. I have some very careful detailed answers here to that question, if you just look. \n\nIt is called Rayleigh-Tyndall scattering, caused by the small size of the nitrogen and oxygen molecules in the air that scatter the blue out of the sunlight, leaving it more yellowish than it would be otherwise. At sunset, the reddish color is absorbed by the ozone overhead, creating a deep blue. \n\nIf you want more details, look it up.
60647
Vinegar reacts with the baking soda for the eruption to be effective. She's right.......use red food coloring. Did you already build the paper mache volcano? Have fun exploding!
9006
The colors of the sunset are determent by the way the light bins breaks while entering the atmosphere and the amount of atoms that are in the air. \nSo if there is a lot of dust in the air the sand partials will break the light bin differently then there is clean air.\n\nAlso, depends where you are geographically located on earth, the light bin has more or less atmosphere to go through. \n\nLastly, if you are near one of the poles, some of the light bins will create spectacular colors in the sky while hitting the earth magnetic field. (Aurora)
372910
When the sun is setting, the position of it results in a mixture of reds, oranges and yellows.  This is because those particular wavelengths are refracted less and therefore seen.  As a result, the other wavelengths (green, blue, indigo, violet) are not seen.  This is also the case in sunrises but sunsets are more brilliant because there are more particles in the air at this time of day (dust, pollution, dirt).  The increase in "substance" in the air results in refraction of ROY to increase.  \nThe dominance of the other three wavelengths (BIV) or (ROY) are seen more as apposed to green.  Remember, when you see color in the sky (either reds, oranges and yellows during sunset/sunrise or blues during midday) this is a mixture ,  so the "in between" wavelength, green, is overridden. \nHowever, there are occasions when you can see green in a sunset for a short period of time.  This is known as "a green flash."  You can read on about this rare phenomenon at: http://hyperphysics.phy-astr.gsu.edu/HBASE/atmos/redsun.html
976524
From the various reading I've done on this subject, as well as the educational programming I've watched about it, I'd say that all things considered, a volcanic eruption, like that of the 1883 explosion of Krakatoa, is by far the most violent and has the most and the longest-lasting consequences not only on the area in which the volcano erupted and the area the lava reached, and not only the areas affected by the resulting tsunamis, its effect actually includes the entire planet, since such an eruption is violent enough to change the entire planet's climate!\n\nWith a volcanic eruption you have: rocks of all sizes, including those the size of houses, hurled out like torpedoes, hot lava that incinerates everything in its path, hot gasses that not only expand, creating a pressure front, not only also incinerate, but also form acids that dissolve the various objects in their path, massive earthquakes, massive tsunamis and last, but most certainly not least, a thick cloud of ash, particles and gasses that wreak utter havoc with the atmosphere and the planet's general climate, thus disrupting wind currents, ocean currents and the general climatic-atmospheric signature of the planet. Consequently, even those places that were nowhere near the volcano, nowhere near the radius of the area the lava will reach, nowhere near any coast that would be affected by the resulting tsunamis, it will still be affected by the falling rocks and debris, which were spewed up into the atmosphere, as well as by the climatic disruptions.\n\nTo my knowledge, not even earthquakes, regardless how violent, can match that level of and extent of destruction, despite the fact that they cause massive fires and potent tsunamis!\n\n\nNote: I took a very "flexible" interpretation of the word storm. I took it to mean any weather/climatic phenomenon/activity. Thus, in that sense, a volcanic eruption can be interpreted as a storm, even though it is not a current of air or water or both!  But, then again, if that type of climatic activity is not to be considered a storm, then what else can it be called? It is ludicrous to lump wind & water weather events together under the title storm, yet consider volcanic eruptions, earthquakes, tsunamis & mudslides, to name a few, categories & titles in of themselves!