The topography of the Land and its principal forms

Relief — this is a form that has the earth's surface. Over time it changes under the influence of various forces. Where were once great mountains become plains, and in some areas there are volcanoes. Scientists seek to explain why this is so. And have a lot of modern science is known.

Causes of transformations

The Relief of the Earth — one of the most interesting mysteries of nature and even history. Because of how varied the surface of our planet, and changed the life of mankind. Changes occur under the influence of internal and external forces.

Among all forms of relief are large and small. The largest of them — it continents. It is believed that hundreds of centuries ago, when man was not yet, our planet had a completely different appearance. May have been only one continent, which eventually fragmented into several parts. Then they separated again. And there were the continents that exist now.

Another major form of steel oceanic trenches. It is believed that before there were less oceans, but then they became more. Some scholars argue that hundreds of years later will be new. Others say that the water flooded some areas of land.

Changes the terrain of the planet for many centuries. Despite the fact that the person is often highly harmful to the nature, its activities are not able to significantly change the terrain. This requires such a powerful force that only nature. However, a person can not only radically transform the terrain of the planet, but to stop the changes that are produced by nature itself. Despite the fact that science made a big step forward, while it is impossible to protect all people from earthquakes, volcanic eruptions, and more.

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Basic information

The Topography of the Earth and major landforms attract the attention of many scientists. Among the major types of mountains, highlands, the shelves and plains.

The Shelf — those areas of the earth surface, which are hidden under the water. Very often they stretch along the coast. Shelf — this is the kind of landform that is found only under water.

Plateau — this is a stand alone mountain, mountain valley and even of the ridge system. Much of what is called the mountains, actually a plateau. For example, Pamir — it is not mountain, as many believe. Also Tien Shan, is the plateau.

The Mountain is most extensive landforms of the planet. They dominate the land more than 600 metres. Their tops are hidden in clouds. It so happens that in warm countries it is possible to see mountain peaks are covered with snow. The slopes are generally very steep, but a few brave men dare to climb. Mountains can form in a chain.

Plain — is stability. The plains dwellers are least likely to experience changes in topography. They almost don't know what earthquakes, because such places are considered most favorable for life. A real plain — this is the maximum flat earth's surface.

Internal and external power

The Impact of internal and external forces on the terrain of the Land Grand. If you examine how changing the surface of the planet for several centuries, we can see how what seemed eternal, disappears. Replaced by something new. The external force could not change the topography of the Land as much as internal. First and second are divided into several types.

Internal forces

Internal forces that change the topography of the Earth, impossible to stop. But in the modern world scientists from different countries try to predict when and where will the earthquake happen where a volcanic eruption.

To internal forces include earthquakes, crustal movement and volcanism.

In the end, all these processes lead to the emergence of new mountains and mountain ranges on land and on the ocean floor. In addition, there are geysers, hot springs, a chain of volcanoes, ledges, cracks, cavities, cave-ins, cones, volcanoes and more.

External forces

The External force does not produce a noticeable transformation. However, one should not lose sight of him. To external processes that shape the relief of the Land are the following: the work of wind and flowing water, weathering, melting glaciers and, of course, working people. Although man, as mentioned above, that is not able to greatly change the face of the planet.

The Work of external forces leads to the creation of hills and ravines, hollows, dunes and dunes, river valleys, gravel, sand, and more. The water is very slowly able to break even with a great mountain. And those stones that are now easily found on shore can be part of the mountain, which was once great.

Earth — this Grand creation in which every detail is thought out. Over the centuries it has changed. There was a radical transformation of the relief and under the action of internal and external forces. In order to better understand the processes occurring on the planet, you need to know about the life that she leads, not paying attention to the man.