Actually rain causes concentrated "hotspots" of fallout.
Nuclear fallout is where, in this case countries, have a fallout and basiclly launch nuclear weapons at eachother.
Cloud formation in the highs and inhibit cloud formation in the lows.
fallout, a mixture of debris picked up by the updraft in the mushroom cloud and condensed vaporized bomb materials.
a radioactive fallout cloud
I assume that you are referring to fallout. It was only a tiny amount of the total fallout at Hiroshima, but as the mushroom cloud did enter the stratosphere some did travel around the world. Most of the fallout though probably fell back to earth in less than a couple hundred miles.
every above ground, surface, or shallow subsurface nuclear test produced fallout. Look up the number of such tests performed and you have your answer.The book Under the Cloud there is a fallout path map for every Nevada Test Site shot that generated fallout. We did not miss any of the continental 48 states and even left some in Canada & Mexico.
An accessory cloud is a small cloud formation which is found attached to or close by a major cloud in one of the main cloud genera, responsible for its formation.
When a visible chemical haze is in the atmosphere it can be called a toxic cloud or nuclear fallout. This depends on the type of chemical that has been disbursed into the air.
When a nuclear weapon explodes above ground there is a great upsurge in air currents because of the heat released-you will have seen pictures of the 'mushroom' cloud no doubt. This carries the fission products formed by the nuclear explosive, and also a lot of dust and debris some of which will have been made active by the huge burst of neutrons released in the explosion. This cloud is carried up so far and then falls to earth-this is the nuclear fall out. The prevailing wind will determine which way the plume goes, and how far.
No
No
Pollution does affect cloud formation. In the case of aerosol pollutants, if the air pollutants reflect the sun's light, the cloud cover increases. If they absorb it, cloud growth is stunted.