TRIBUN-VIDEO.COM – Check out the structure of the earth’s layers and their chemical composition.
Earth is the third planet of the planetary arrangement in the solar system.
Planet earth has a layered structure layer to the core of the earth (core).
While the structure of the earth is the arrangement/layer that forms the earth which consists of many types of materials.
With the earth’s diameter of 7,926 miles, the earth has at least 4 layers of the earth that make up.
The following are the types of earth structures, quoted from dikutip gramedia.com:
1. Earth’s crust
2. Blanket of the Earth
3. Outer core
4. The inner core of the earth.
The earth in general consists of several layers, namely the uppermost part is called the lithosphere or crust, the layer below is the asthenosphere or mantle and the lowest is the earth’s core.
By method geophysics It can be seen that the total density of the earth is about 5.52.
The earth’s crust itself which is the outermost layer and is composed of rocks has a specific gravity between 2.5 to 3.0.
From this it can be seen that the material that composes the interior of the earth is a heavier material with a greater specific gravity than the rocks that make up the earth’s crust.
Check out the full explanation about Earth Layer Structure the following:
1. Earth’s crust
Kerak Earth is the outermost layer of the earth which is divided into two categories, namely oceanic crust and continental crust.
The oceanic crust is about 5–10 km thick while the continental crust is about 20–70 km thick.
The main constituents of the oceanic crust are basalt rocks.
Meanwhile, the main rock that makes up the continental crust is granite, which is not as dense as basalt.
Kerak Earth and part of the Earth’s mantle to form the lithosphere layer with a total thickness of approximately 80 km.
The temperature of the crust increases with depth.
At its lowest limit, the temperature of the crust reaches 1,100 C.
The atmosphere is also divided into five layers, namely the troposphere, stratosphere, mesosphere, thermosphere, and exosphere.
The troposphere is the layer closest to the Earth’s surface, with a distance of about 0 to 15 kilometers.
2. Hydrosphere
As the name suggests, hydrosphere refers to the layer of water that is on the surface of the earth.
That is, the hydrosphere layer includes oceans, oceans, lakes, rivers, groundwater, and water vapor.
Quoted from the National Geographic Society, the hydrosphere is the total amount of water on a planet.
The hydrosphere includes water on the planet’s surface, underground and in the air.
The hydrosphere of a planet can be in the form of liquid, vapor and ice.
The hydrosphere is the sum of all the water on earth and the water cycle that distributes it throughout the planet.
3. Lithosphere
The lithosphere is the outermost layer of the crust consisting of rock.
In addition, the lithosphere is also a moving plate, so that it can cause continental drift.
Literally the lithosphere is a layer Earth the most extraordinary or commonly referred to as the Earth’s crust.
According to Klarke and Washington, the rock or lithosphere on the Earth’s surface is almost 75 percent composed of silicon oxide and aluminum oxide.
The main constituent of the lithosphere layer is rock consisting of a mixture of similar or dissimilar minerals that are loosely or densely bound to each other.
The parent rock forming the lithosphere is magma, which is incandescent molten rock that has very high temperatures and is found under the earth’s crust.
Magma will undergo several processes of change until it becomes igneous rock, sedimentary rock and metamorphic rock.
The lithosphere plays an important role in plant life.
The lithosphere has two parts, namely:
– The upper lithosphere is land with about 35 percent or 1/3 part.
– The lower lithosphere is the ocean with about 65 percent or 2/3 of the way.
lithosphere Earth covers the crust and upper part of the mantle Earth which resulted in the hardness of the outermost layer of planet Earth.
4. Biosphere
Biosphere has the meaning of ‘living layer,’ which refers to the layer that can be inhabited by living things.
The Biosphere layer includes land, water, air, and interactions between living things and their environment.
The definition of the biosphere in a narrow sense is the layer or part of the earth that houses living things.
Understanding the biosphere in a broad sense has the meaning of living things and layers on the earth’s surface that are suitable for life.
According to Vladimir Wanouich Veinadsku, the biosphere is an open system and has developed since the beginning of the history of life on earth.
This article has been published on Tribunnews.com with the title
Get to know the structure of the Earth’s layers, here are the definitions and chemical compositions
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