Does rain plays a chemical and physical role in molding the face of the Earth?

Answer 1

Both

Physical Weathering

Reactions at the Earth's surface tend to make large particles smaller. A decrease in particle size increases the total surface area of the particles. Consider a cube of rock that is 1" on a side. The total surface area is 6 square inches. If this cube is broken down into 8 cubes each 0.5 " on a side the total surface area increases to 12 square inches (confirm!). Continued reduction in size leads to an increasing total surface area. This is important because chemical reactions generally begin at the surface of an object.

Chemical Weathering
Oxidation involves the loss of electrons. Oxygen is a particularly good agent of oxidation but it is not unique.Water and Carbon Dioxide react to form carbonic acid H2CO3 which dissociates to form H+ and HCO3-. This is the source of the H+ in rain water, for example. Caves are underground openings usually created in carbonate rocks which have interacted with slightly acidic waters.

Answer 2

Well, I am a chemist. They actually are both. In one sence you have the physical changes taking place such as the rain turning to snow or hail, you also have the rain weathering down mountains. A good example of rain weathering down mountains would be the Apalachian mountains in Canada. These mountains are millions of years old and were at one time higher than mount Everest. Rain, Wind and other meens of weather wore these mountains down to what they are today. Physical changes is when nothing happens as far as a chemical reaction is concerned, a physical change is when the rain or anything changes state to form ice or snow, no reaction, just changing of state.

A chemical change on the other hand would be the rust on a car. That is caused by rain and weather slowly eating its way through the car, the Water from the rain and water reacts with the Iron in the metal to form Iron Oxide, this is a chemical reaction taking place and as a result is classed as a chemical change. An example of rain doing a chemical change would be when the water reacts with elements on the earth to from minerals which plants and animals can use. Another good example would be caves, not only does a physical change happen when the water cuts its way through the rock and sand, but it moves and shapes the cave at the same time, the slight acidity in the water can make up for some nice caves. Hope this helps.

Wee-Man.

Answer 3

Yes, it plays an important role in this.

Physical role

Rain is main source of water. It is used in generating electricity and for agricultural purposes. In agriculture we use water for irrigating crops. And many wild plants are also grown with the help of rain water. With crops the greenery spreads throughout the earth surface. Thus rain helps in molding the earth surface physically.

Chemical role :
Nitrogen and Oxygen present in the air combine to form nitric oxide due to lightening discharges in atmosphere and later it oxidises into nitrogen dioxide and Nitrogen dioxide thus prepared combines with rain water and forms nitric acid and it drips into soil and reacts with basic oxides and carbonates in the soil and forms nitrates.

Certain types of bacteria present in the nodules of leguminous plants use these nitrates for their growth.

Thus rain water also helpsto spread greenery in this way also.

Answer 4

Sunspots through themselves probably do no longer play a place in Earth's climate variablity. Sunspots do although exhibit cyclical differences interior the solar. It surely isn't the sunspots that bring about differences in Earth's climate. It extra likley some thing to do with differences in magnetism, image voltaic irradiance, UV, or some thing else or combos of the above. a sort of aspects could be magnefied in our atmosphere someway. we don't understand yet previous correlation is quite stable info that loss of sunspots correlates properly to cooler temperatures. Why it incredibly is, is unknown in the present day. to easily forget in regards to the correlations is burying your head interior the sand and properly-knownshows a bias to push CO2 because of the fact the reason. then you definately could desire to ask your self why perform a little human beings desire to push CO2 as a reason while the info in simple terms does not help it. the obtrusive answer is that it incredibly is politically or emotionally based.

Answer 5

Yes

Answer 6

Yes.