Relief of Earth

Relief earth is meant here is covering a very broad sense, both found on continents or oceans contained bottom. Based on the broad sense, the relief of the Earth can be grouped into three major categories, namely:

1. Relief Order I (Relief of the first order)

2. Relief Order I I (Relief of the second order)

3. Relief Order III (Relief of the third order)

The grouping of the three types of relief above is based also upon occurrence of each.

Hence it contains elements relative time.

1 Relief Order First

Consisting of Exposure Continent (Continental Platforms) and Ocean Basin (Ocean Basin). The forms of the first-order this includes a very large dimensions on earth. As we know that water and its land area totaling 107 million square miles, which consists of a vast continent (continents) amounted to 56 million square miles and the rest is 10,000,000 square miles wide from the edge of the continent (continental shelf). What is meant by Exposure Continent include Continental and Continental Bank. Thus the total exposure Continent is 66 million square miles. Exposure to North and South Americas, Eurasia, Africa, Australia, and Antarctica is the Courant-highest portion of the surface of the lithosphere.

The edge of the continent is part of the continental shelf which is located below sea level. Ocean basin has an average depth of 2.5 miles below sea level, although we know that the topography of the ocean floor has an irregular shape. There are a lot of very deep depression of average depth limit, known as the Sea Trench (Ocean Troughs), besides that there are also parts of the seabed which appear on the surface or gradually being close to the sea surface.

Relief of the first order is known to be closely related to the occurrence of the earth, thus theories of geology, astronomy, physics and mathematics, such as "planetesimals Hypothesis", "Spreading seafloor Hypothesis" and "Continental Drift Theory" became an integral part in the formation of relief of the first order.

.2.Relief Second Order

Relief Order two commonly referred to as forms that build (Constructional forms), this is due to the relief of the second-order formed by endogenous style as a constructive force. Area of ​​the continents and the ocean puddles where the presence or formation of units of the reliefs of the second order, such as Plains, Plateau and Mountains.

3. The shape of the energy generated by ocean waves, namely:

a. Erosional forms, such as: erode sea caves

b. Residual forms, such as: staoks & Arches

c. Depositional forms such as: beaches, bars and spits

4. Form created by wind energy, namely:

a. Erosional forms, such as: blow holes in sandy areas

b. Residual forms, such as: pedestal and mushroom rocks.

c. Depositional forms such as sand or clay sediment in the form of dunes or loess.

In addition to the energy of the physical damage, the organism can also be an agent that tends to destroy the rocks in the earth's surface, otherwise the activity of precipitation can produce forms such as coral reefs (coral-reefs) and karst. It can be concluded, that the time of formation of the third-order relief is different. The first form of relief is formed ahead of the second-order relief and relief of second-order form ahead of the third-order relief