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Wednesday, June 19, 2013
Saturday, June 23, 2012
Wednesday, June 20, 2012
Thursday, February 23, 2012
Water one of the beautiful nature element on earth
Water is a chemical substance that is composed of hydrogen and oxygen and is vital for all known forms of life. In typical usage, water refers only to its liquid form or state, but the substance also has a solid state, ice, and a gaseous state, water vapor or steam. Water covers 71% of the Earth's surface. On Earth, it is found mostly in oceans and other large water bodies, with 1.6% of water below ground in aquifers and 0.001% in the air as vapor, clouds (formed of solid and liquid water particles suspended in air), and precipitation. Oceans hold 97% of surface water, glaciers and polar ice caps 2.4%, and other land surface water such as rivers, lakes and ponds 0.6%. Additionally, a minute amount of the Earth's water is contained within biological bodies and manufactured products.
An ocean is a major body of saline water, and a principal component of the hydrosphere. Approximately 71% of the Earth's surface (an area of some 361 million square kilometers) is covered by ocean, a continuous body of water that is customarily divided into several principal oceans and smaller seas. More than half of this area is over 3,000 meters (9,800 ft) deep. Average oceanic salinity is around 35 parts per thousand (ppt) (3.5%), and nearly all seawater has a salinity in the range of 30 to 38 ppt. Though generally recognized as several 'separate' oceans, these waters comprise one global, interconnected body of salt water often referred to as the World Ocean or global ocean. This concept of a global ocean as a continuous body of water with relatively free interchange among its parts is of fundamental importance to oceanography.
The major oceanic divisions are defined in part by the continents, various archipelagos, and other criteria: these divisions are (in descending order of size) the Pacific Ocean, the Atlantic Ocean, the Indian Ocean, the Southern Ocean and the Arctic Ocean. Smaller regions of the oceans are called seas, gulfs, bays and other names. There are also salt lakes, which are smaller bodies of landlocked saltwater that are not interconnected with the World Ocean. Two notable examples of salt lakes are the Aral Sea and the Great Salt Lake.
World's famous oceans:
- Arctic Ocean
- Atlantic Ocean
- Indian Ocean
- Pacific Ocean
- Southern Ocean
A lake (from Latin lacus) is a terrain feature (or physical feature), a body of liquid on the surface of a world that is localized to the bottom of basin (another type of landform or terrain feature; that is, it is not global) and moves slowly if it moves at all. On Earth, a body of water is considered a lake when it is inland, not part of the ocean, is larger and deeper than a pond, and is fed by a river. The only world other than Earth known to harbor lakes is Titan, Saturn's largest moon, which has lakes of ethane, most likely mixed with methane. It is not known if Titan's lakes are fed by rivers, though Titan's surface is carved by numerous river beds. Natural lakes on Earth are generally found in mountainous areas, rift zones, and areas with ongoing or recent glaciation. Other lakes are found in endorheic basins or along the courses of mature rivers. In some parts of the world, there are many lakes because of chaotic drainage patterns left over from the last Ice Age. All lakes are temporary over geologic time scales, as they will slowly fill in with sediments or spill out of the basin containing them.
A pond is a body of standing water, either natural or man-made, that is usually smaller than a lake. A wide variety of man-made bodies of water are classified as ponds, including water gardens designed for aesthetic ornamentation, fish ponds designed for commercial fish breeding, and solar ponds designed to store thermal energy. Ponds and lakes are distinguished from streams via current speed. While currents in streams are easily observed, ponds and lakes possess thermally driven microcurrents and moderate wind driven currents. These features distinguish a pond from many other aquatic terrain features, such as stream pools and tide pools.
A river is a natural watercourse, usually freshwater, flowing toward an ocean, a lake, a sea or another river. In a few cases, a river simply flows into the ground or dries up completely before reaching another body of water. Small rivers may also be called by several other names, including stream, creek, brook, rivulet, and rill; there is no general rule that defines what can be called a river. Many names for small rivers are specific to geographic location; one example is Burn in Scotland and North-east England. Sometimes a river is said to be larger than a creek, but this is not always the case, due to vagueness in the language A river is part of the hydrological cycle. Water within a river is generally collected from precipitation through surface runoff, groundwater recharge, springs, and the release of stored water in natural ice and snowpacks (i.e., from glaciers).
A stream is a flowing body of water with a current, confined within a bed and stream banks. In the United States a stream is classified as a watercourse less than 60 feet (18 metres) wide. Streams are important as conduits in the water cycle, instruments in groundwater recharge, and they serve as corridors for fish and wildlife migration. The biological habitat in the immediate vicinity of a stream is called a riparian zone. Given the status of the ongoing Holocene extinction, streams play an important corridor role in connecting fragmented habitats and thus in conserving biodiversity. The study of streams and waterways in general involves many branches of inter-disciplinary natural science and engineering, including hydrology, fluvial geomorphology, aquatic ecology, fish biology, riparian ecology and others.
Tuesday, December 6, 2011
Society & Nature
Society & Nature
Our present society is almost totally defined by artificial things. Everywhere you look, there are man-made machines and gadgets that are being used. Even kids these days are so into artificial things, and do not have as much awareness of nature as the previous generations did. edicines are becoming more popular.
In the home-building industry, more and more designers are choosing natural materials as well. One of the most popular choices these days are the natural granite tile countertops. These countertops are fashioned from great hard blocks of granite that have been dug from beneath the earth.
Because of the numerous advances in technology, granite tile countertops are much easier to avail of these days than in the previous years. This is good, because there is quite a large demand for granite tile countertops recently, as people are getting to appreciate the beauty of nature But in recent years, many people are turning back to natural alternatives in many areas. Natural foods are mmore.
In a world that has been bombarded by electronics and artificial objects for so long, things such as granite tile countertops make us realize the splendor of nature that we have been taking for granted.
The process of changing these natural beauties into functional parts of our homes is a marvel in itself. The next time you look at your granite tile countertops, just imagine that thousands of years ago, these rocks were buried under the mountains of what we now call China, or South America, or Europe, being created and designed by mysterious powers before there were even people on earth.
Because granite tile countertops come from real rocks, no tile is exactly the same as another. This inherent exclusivity is just one of the things that make them so attractive to many homeowners. Knowing that the patterns and mixture of colors in your particular granite tile countertops are one in a million makes them more beautiful and more personally significant to you.
The beauty of granite tile countertops, though, is not only in their appearance. There is even a deeper and more essential beauty in what they represent. They serve as a reminder to humanity that we must give more appreciation to nature, and reflect on its magnificence more often Some people who have the luxury of time communicate with nature by going on vacations in the woods or on faraway islands. For those of us who cannot do that, we can now commune with nature simply by gazing at our granite tile countertops, and reflecting on their natural elegance.
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