around us so much unknown!Every day, scientists and ordinary people deeper curiosity.Natural phenomena with which we are confronted daily and which are so used are sometimes very complex physics.
term "natural phenomena»
At the elementary school we are taught such a thing as natural history.To the kids do not get lost and understood the lesson presentation, given available information and brief portions.From there, you can learn important: the phenomenon of nature - are any processes that occur with objects as the living and the nonliving world.Any change may be physical or chemical basis.At the same time the source object can be modified and converted into another element.
physical and chemical phenomena
physical impact, which is exposed to the object or substance that can deform it, to give a variety of other properties and change the size of the state, but the starting material remains unchanged.
example of this phenomenon of nature is the process of changing the state of the lake.Under the influence of sunlight warms the pond, and the life of the organisms in it changes.Those who love the heat swim closer to the surface.Others, on the contrary, hiding in the silt on the bottom.In winter, the process is reversed: the water freezes and changes state from liquid to solid.Life in the pond is also slowing.However, the very initial substance - water - remains unchanged.
phenomena of animate and inanimate nature, which are the chemical nature of occurrence, not only changing a substance involved in the process, but also create a new one.This may present different characteristics.Emission of gas, discoloration, precipitation, and light, taste or odor - that is parts in which the chemical reaction effects differ from physical processes.
Types phenomena of the world
phenomena of nature are also divided on climatic, geological and geomorphological, biological, biogeochemical and others.The most common are the changes of the first and second types.The rains, blizzards, droughts, global warming, typhoons - climatic events.Earthquakes, volcanic eruptions, tsunamis, soil erosion and others - geological and geomorphological changes.
And those and others, in turn, are divided on the basis of duration:
- moment - the phenomena of nature, which change the atmosphere in a matter of seconds or minutes.These are sometimes referred earthquake, eruption of lava from the crater, and others.
- Short - short-lived nature of the event (from a few hours to several days): full moon, rain, heat, flooding, and others.
- Long - the phenomena of nature, the duration of which can be measured in months and even years: climate change (global warming), drying up of water bodies, and so on. D.
In addition, all the events that happen in the world around us, we candivided into seasonal and daily.For example, the swelling of the kidneys, snowfall, the flight of birds in the winter and others - examples of the first category events.The second include the sunrise and sunset.
