Earth layers

According to the composition (type of material) to the earth can be divided into the following layers:

* Earth's crust
* Flat Earth

Mantle located between the outer core and the crust of the earth. Earth's mantle is a rock that contains magnesium and silicon. The temperature at the top mantle ± 1300 ° C-1500 ° C and the temperature of the mantle of ± 1500 ° C-3000 ° C

* The core is

However, according to the mechanical properties (material properties) that the earth can be divided into the following layers:

* Lithosphere
* Astenosfir
* Mesosphere
* Earth's outer core

Earth's outer core is a piece of land that covers the inner core of the Earth. Earth's outer core has a thickness between 2250 km and a depth of 2900-4980 km. Earth's outer core composed of iron and nickel net with a temperature of 3900 ° C

* Inner core Earth

Inner core of the earth is the deepest part of the earth or the earth's core can also be called. Earth's core has a diameter of 2600 km and 1200 km thick. core is composed of iron and nickel solid with temperature can reach 4800 ° C

Outside of Earth

Earth is the third planet from the eight planets in the Solar System. Estimated to reach 4.6 billion years old. The distance from the Earth to the Sun is 150 million kilometers. Earth has a layer of air (atmosphere) and the so-called magnetic field (magnetosphere) that protects the surface of the Earth from the solar wind and ultraviolet radiation from outer space. This air layer surrounds the earth at a height of about 700 km. The air layer is divided into troposphere, stratosphere, mesosphere, thermosphere exosphere, and.

The ozone layer, as high as 50 km, are in the stratosphere and mesosphere and protects the Earth from ultraviolet rays. The difference between the surface temperature of the Earth is -70 ° C to 55 ° C, depending on local climate. One day divided into 24 hours, and one year on land equal to 365.2425 days. The Earth has a mass weight of 59.760 billion tons, with an area of ​​510 million square kilometers. The density of the earth (about 5,500 kilograms per cubic meter) is used as a unit of weight ratio of any other planet Earth's gravity is set to 1.

The Earth has a diameter of 12,756 kilometers. Earth's gravity is measured as 10 N kg-1 be a unit of measurement of the gravity of other planets, Earth's gravity is set to 1. The Earth has a natural satellite is the moon. 70.8% of the earth's surface covered with water. Air earth consisting of 78% nitrogen, 21% oxygen and 1% water vapor, carbon dioxide and other gases.