There is so much unknown around us! Every day, scientists and ordinary people are getting deeper into the world around them. Natural phenomena that we encounter every day and which we are so accustomed to have sometimes very complex physics.
The concept of "natural phenomena"
In the elementary grades we are taught a subject such as Natural History. In order for the kids not to get lost and understand the lesson, the information is given in accessible and concise portions. The main thing can be drawn from there: the phenomena of living nature are any processes that occur with objects of both the living and nonliving world. Any change may have a physical or chemical basis. In this case, the original object can be modified and transformed into another element.
Physical and chemical phenomena
The physical impact to which an object or substance is exposed can deform it, impart various other properties, change its size and state, but the original substance itself remains unchanged.
An example of such a phenomenon of wildlife is the process of changing the state of water in a lake. Under the influence of sunlight, the pond heats up, and the life of organisms in it changes. Those who like heat float closer to the surface. Others, on the contrary, hide in silt at the bottom. In winter, the opposite process occurs: water freezes and changes its state from liquid to solid. Life in the pond is also slowing down. However, the original substance itself - water - remains unchanged.
Phenomena of animate and inanimate nature, which have a chemical nature of occurrence, not only change any substance involved in the process, but also create a new one. In this case, various signs may be present. Gas evolution, color change, precipitation, light emission, the appearance of smell or taste - these are the details by which chemical reactions differ from physical processes.
Types of phenomena of the world
Natural phenomena are also divided into climatic, geological and geomorphological, biological, biogeochemical and others. The most common are changes of the first and second types. Rains, blizzards, droughts, global warming, typhoons are climatic phenomena. Earthquakes, volcanic eruptions, tsunamis, soil erosion and others are geological and geomorphological changes.
And those, and others, in turn, are divided according to the principle of duration:
- Instant - wildlife phenomena that change the environment in seconds or minutes. They sometimes include earthquakes, an eruption of lava from the crater of a volcano, and others.
- Short-term - short-term natural events (from several hours to several days): full moon, rainfall, heat, high water and others.
- Long-term - natural phenomena, the duration of which can be measured in months or even years: climate change (global warming), drying out of water bodies, etc.
In addition, all the events that occur in the world around us can be divided into seasonal and daily allowances. For example: swelling of the kidneys, snow falling, the flight of birds to winter and others - examples of the first category of phenomena. The second includes sunrise and sunset.