Melting Mountain Ice on Alps of Europe

Free video about melting ice. This free video was created for you by http://epsos.de and can be used for free under the creative commons license with the attribution of epSos.de as the original author of this melting ice video. Thank you for supporting the creative commons movement !! Glaciers are the largest freshwater reservoir in the world, after the oceans, the largest water reservoir of the earth. They cover in the polar regions much of the land. Glaciers are major water supplier for many river systems and have a decisive influence on the global climate. Glaciers are also significant landscape shaper, especially in the cold periods of the Pleistocene, in which on the northern hemisphere ice sheets in the northern and central Europe into ranged. The glaciers of the Alps, which could advance even into the foothills of the Alps in the cold periods, formed huge U-shaped valleys and dominate the landscape today. The Alpine region includes the southwest on the Gulf of Genoa to the Apennines to, includes the Po Valley, branches to the French and Swiss Jura and ends in a fan shape in the East against the West Pannonian mountains and hills. In the northeast of the Danube near Vienna, the Alps are by the Vienna Basin of the geologically related Carpathians separated, in the southeast you go into the strong karst Dinaric Mountains over. To the north the Alps fall gradually to the Austrian and German Alpine foothills from. To the south of the waste is to Po Valley steeper. The mountain range, which includes the Alps, extends from the African Atlas as far as Southeast Asia. As melting is defined as the direct override of a substance from the solid to the liquid aggregate state. Takes place this process of pure substances at constant pressure, the present case is melting temperature is uniquely determined. Melting temperature and pressure are collectively known as melting point referred to. During the transition (referred to also as "thawing"), the temperature remains constant, all the heat supplied is used as a melting enthalpy invested in the change of state. Thus, for example, has a water / ice mixture at atmospheric pressure, a temperature of 0 ° C. The opposite is the melting solidification. A mountain is any natural elevation accused and steep terrain. The formation of the mountains has several causes: the tectonic folds, the volcanic eruptions and erosion on the part of the masses are most sedimentary features. Because it can be considered an elevation mountain there must be a level difference between the base and the important point, at least a few hundred meters. Elevations are unimportant ordinary name hills or mountains (as a rule those mountains are considered elevations exceeding 350-400 meters). The total height is less decisive. This worldwide measured (in feet or meters) from the sea level. By extension also takes the name of mountain areas and mountain regions in general. During the Quaternary the glaciers eroded mountain ranges resulting in many current characteristic mountain landscapes. An example is the tertiary education mountainous ridge of the Andes. As ice is generally frozen water called that - in addition to liquid water and water vapor - the third possible physical state represents. It generally forms at zero degrees Celsius and counts as naturally occurring crystalline solids with a defined chemical composition of the minerals. Because of its chemical structure H 2 O ice belongs to the substance group of oxides. Ice crystallized in the hexagonal crystal system and occurs in nature in various forms, from the snowflake on the hailstone to glaciers. Its density of 0.9168 g / cc (at 0 ° C) is less than that of water (1 g / cc), which is why it floats on the water surface, where ice sheets, ice floes and icebergs forms. Here, about 90 percent by volume of the ice is under water (buoyant force of the water against the weight force of the ice) and only about 10 percent by volume above the water surface. In pure form, there is ice from colorless, transparent crystals. Ice blocks but usually contain a lot of fine air bubbles during solidification of the ice crystals are enclosed and thus appear by multiple refraction white. As a chemical substance, it is characterized by some special features not available on the anomalies of water based. In many meteorological phenomena ice plays an important role. The ice caps of the Arctic regions are of great importance for the global climate, and especially for the global water cycle. Has a correspondingly significant impact therefore on our biosphere. The science of shapes, appearance and properties of ice and snow is called glaciology. Thank you for supporting the creative commons movement !!