What causes rain? Is it clashing of clouds or because of ozone?
406941
Neither. When cold air hits wet, moist air it chills it until it can no longer hold the moisture and you have rain. \nLook at a map of the U.S. The green areas are all along the coast where the ocean is warmer than the land and the air from the land causes rain. Clouds are just fog and cannot clash.\n\nOr, sometimes it is because the Thunder God, Thor, strikes his mighty hammer and causes Odin to send down torrents of rain on Loki's head. Take your pick!
355452
This is complicated! I am not good at this but just think:\neven the angle of the rain drop is too complicated! It can be affected by the speed of the wind, the size of the droplet, the altitude (maybe?), etc., etc.\nNow if the glass is full of dirt that will hold the droplets, or the glass is coated with something slippery, then the speed will be affected, too.\nIf the air is so polluted, the rain is acid, then ... \nAnd there could be more factors....
205468
Pollution of the air from factories causing the formation of sulfuric or nitric acids. It gets in the atmosphere and it comes down as rain. this was a big problem in Europe in the 1960's, esp. in east europe in 1968
331509
acid rain!!!! \n\nit is widely believed that the acid rain is the result of wash out from the atmosphere, of the "acid rain gases", namely sulphurdioxide and nitrogen oxides. \n\nboth wet and dry deposits corrode metallic structures and deteriorate the quality of paint. \n\nthe deposition is particularly harmful to stone buildings, statues and monument.
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The individual drops of rain usually form as pure drops of water.  As these drops fall, they encounter gases in the atmosphere which can be absorbed and react with the water.\n\nMost of the gases are oxides of nonmetal elements.  When they react with water, they form acids.  This is the source of "acid rain."\n\nFor example Nitrogen dioxide reacts with water to form nitric acid.
150463
There are a couple of reasons that work together to explain this situation. The first one has to do with how raindrops form. \n\nNow, it may seem silly to make such an obvious statement as, "Rain always falls from clouds." But once it has been said, we can then ask, "What is going on inside those clouds?" And that question leads us to plenty of relevant information! \n\nDo you remember the last time your local weather was described as being "hot and humid"? Do you remember what it FELT like? Do you also remember what the air LOOKED like? The reason I am asking these questions is because it is important to know that ordinary water is commonly found in one of three forms: solid, liquid, or gas. The liquid form is what we call "water", while the solid form we call "ice", and the gas form we call "water vapor". Water vapor is colorless, odorless, and invisible. But you sure can FEEL it on a hot and humid day! \n\nNext, do you remember the last time you encountered some fog? Think about what IT looked like. If you looked real close, you would have seen zillions of tiny tiny droplets of water floating in the air. And, if you remember the last time you saw some steam, you might think that it looked just like fog (except it was hotter). Steam is NOT pure water vapor! \n\nWell, it happens that the description, "zillions of tiny tiny droplets of water floating in the air", applies to every fog, to every mist, to every burst of steam -- and to every cloud in the sky. If you sit back and simply watch the clouds for a while, you will see that some clouds grow, some shrink, and some do nothing but move across the sky. What is happening to the growing or shrinking clouds? When a cloud grows, water vapor in the air gradually "condenses" to form lots more tiny tiny droplets. When a cloud shrinks, many droplets are completely "evaporating" to become invisible water vapor. \n\nAs the winds move air across the sky, carrying clouds along, fragments of wind known as "eddys" can do strange things to the shapes of clouds. A common game is to study a cloud's shape and guess what it looks like. Also, winds from different directions can collide with each other, which often has great effects upon clouds. It depends on how cold or warm the colliding winds are, and how much water each wind carries (only the differences matter, not whether the water is in the form of vapor or tiny drops). \n\nFor rain to happen, the weather conditions inside the clouds, and surrounding them, has to cause the droplets to grow. Some droplets will grow by colliding and combining with each other -- just what you Asked about. Some droplets will grow by acquiring more and more water vapor from the air. Some will do both. But the important thing to remember now is that MOST of the droplets in the clouds grow at the same time! \n\nBUT, the droplets do not all grow at the same rate; some grow faster than others. As soon as ANY get big enough, they start to fall out of the cloud. Water is heavier than air, after all. Depending on the wind conditions, those first raindrops might be blown back up into the cloud, where they can grow some more. Eventually, however, they get too big to stay up in the air, so they fall all the way to the ground. And the slower-growing droplets will fall after them, and the slower-growing-yet droplets will fall after THEM, and so on. This is the essence of the raining process. \n\nAs I said at the start, there are a couple of reasons why the raindrops don't combine to make a single stream. The first reason is simply that raindrops start falling just as soon as they are too heavy to stay in the air. The second reason is that they are all falling together DOWNWARDS, not sideways. If the wind blows them sideways, they all move TOGETHER sideways. That isn't good enough to cause them to meet each other, while falling, so they could combine to form a si
1156612
Water vapour is a colourless, transparent gas - so clouds are quite clearly not made of it.\n\nClouds are indeed made of small drops of water. They stay up becaus of convection. Clouds can only be stable where there is an updraft to counter the slow drift down of the water droplets under gravity. \n\nThere are two basic types - stratiform which are stable and supported by a constant updraft and convective in which you can actually see the churning effect of convection if you look.
434074
clouds some times get charged to positive or negetive. the opposite charge is develped on the earth over which the cloud stands. if the cloud is close enough and the charge is good enough especially when water content in the air is high there will be an electric discharge fron the cloud to the earth. this is lightning and the noise of the discharge is thunder
841635
The process that leads to acid rain begins with the burning of fossil fuels. Burning, or combustion, is a chemical reaction in which oxygen from the air combines with carbon, nitrogen, sulfur, and other elements in the substance being burned. The new compounds formed are gases called oxides. When sulfur and nitrogen are present in the fuel, their reaction with oxygen yields sulfur dioxide and various nitrogen oxide compounds. In the United States, 70 percent of sulfur dioxide pollution comes from power plants, especially those that burn coal. In Canada, industrial activities, including oil refining and metal smelting, account for 61 percent of sulfur dioxide pollution. Nitrogen oxides enter the atmosphere from many sources, with motor vehicles emitting the largest share—43 percent in the United States and 60 percent in Canada.\n\nOnce in the atmosphere, sulfur dioxide and nitrogen oxides undergo complex reactions with water vapor and other chemicals to yield sulfuric acid, nitric acid, and other pollutants called nitrates and sulfates. The acid compounds are carried by air currents and the wind, sometimes over long distances. When clouds or fog form in acid-laden air, they too are acidic, and so is the rain or snow that falls from them. \n\nAcid pollutants also occur as dry particles and as gases, which may reach the ground without the help of water. When these “dry” acids are washed from ground surfaces by rain, they add to the acids in the rain itself to produce a still more corrosive solution. The combination of acid rain and dry acids is known as acid deposition.\n\nKKG
254000
Both. The rotation of the earth causes storms (and your the water in your toilet) to spin in one direction depending on what hemisphere of the earth you live on.  Wind can also make clouds if blown up a mountain face by forcing warmer air into colder mountain air and thus creating clouds. These clouds form on the windward side of the mountain, and are pushed over the top of the mountain (by the wind) and then disappear on the leeward side of the mountain when the cooler air reaches the lower elevation warmer air.
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After a thunderstorm, there is a distinct smell associated w/ ozone created by lightning. Could be that.\n\n:)
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As it turns out, the smells people associate with rainstorms can be caused by a number of things. One of the more pleasant rain smells, the one we often notice in the woods, is actually caused by bacteria! Actinomycetes, a type of filamentous bacteria, grow in soil when conditions are damp and warm. When the soil dries out, the bacteria produces geosmin spores in the soil. When the soil is too hot, the bacteria are not able to tolerate the dessication, so it produces spores as survival strategies. The spores remain invulnerable for years and are resistant to dessication and heat. The wetness and force of rainfall kick these tiny spores up into the air where the moisture after a rain acts as an aerosol (just like an aerosol air freshener). The moist air easily carries the spores to us so we breathe them in. These spores have a distinctive, earthy smell we often associate with rainfall. Geosmine (dimethyl-9-decalols) is the microbial product found in the spores is responsible for this pleasant smell. \n\nAnother sort of smell is caused by the acidity of rain. Because of chemicals in the atmosphere, rainwater tends to be somewhat acidic, especially in urban environments. When it comes in contact with organic debris or chemicals on the ground, it can cause some particularly aromatic reactions. It breaks apart soil and releases minerals trapped inside, and it reacts with chemicals, such as gasoline, giving them a stronger smell. These reactions generally produce more unpleasant smells than bacteria spores, which is why the after-the-rain smell isn't always a good one.\n\nAnother after-the-rain smell comes from volatile oils that plants and trees release. The oil then collects on surfaces such as rocks. The rain reacts with the oil on the rocks and carries it as a gas through the air. This scent is like the bacteria spores in that most people consider it a pleasant, fresh smell.♥
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The water is in the form of a vapor or gas, like steam.  When the vapor becomes concentrated enough to form droplets, it turns to rain.
33298
3 things r neede for cloud formation...cooling of air, presence of water vapour (relative humidity shud be close to 100%), and condensation nuclei( like dust particles).\ndunno who found it, sorry
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Clouds are water vapor. Think of it like a pocket of fog in the sky.
30866
Monsoons are caused by the fact that land heats up and cools down more quickly than water. Thus, in summer, land reaches a higher temperature than the ocean. The hot air over the land tends to rise, creating an area of low pressure. This creates an extremely constant wind blowing toward the land. Associated rainfall is caused by the moist ocean air being diverted upward by mountains, which causes cooling, and in turn, condensation.\n\nIn winter, the land cools off quickly, but the ocean retains heat longer. The hot air over the ocean rises, creating a low pressure area and a breeze from land to ocean. Because the temperature difference between the ocean and land is less than in summer, the winter monsoon wind is not as constant.\n\nMonsoons are similar to sea breezes, but they are much larger in scale, stronger, and are more constant and fast.
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Acid rain is caused by the combustion of fossil fuels, primarily the burning of coal but gasoline combustion also contributes. Burning of fossil fuels produces nitrogen oxide and sulfur dioxide which after emission transform into Sulfate and nitrate particles which combine in the air to form sulfuric and nitric acids. These acids fall to the earth as rain or other precipitation and get deposited in lakes and rivers and soil. \nA short term solution to problems associated with acid rain is to add a buffer to lakes other water sources to neutralize the acid but this is an expensive and temporary solution. The best way to prevent acid rain is to reduce emissions of the harmful substances by reducing the combustion of fossil fuels and practicing energy conservation or using other cleaner energy sources, like wind or solar power.