Bameswarablogs -- Discussing something about the house is fun, everyone will always be excited when discussing where to live, it is true that everyone is happy with the house they live. On this occasion, we will discuss all of our homes. Yes, the home of all living things on the surface of the earth, the planet we love so much, earth. You, agree!
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| Eart from Pixabay |
A. EARTH
Earth is the only planet that we can live in, because so far the earth is a planet in the solar system that seems to support life, but that does not mean in the solar system there are no planets other than earth that can be inhabited, there may be and we will never know about life. other than on earth, the human planet currently as a place to live is earth.
Earth contains a combination of liquid water, an atmosphere consisting of two elements, namely Oxygen (O) and Nitrogen (N), and is supported by dynamic weather patterns that provide the basic elements for various distributions of life, be it humans, animals or plants. Friends need to know that for more than millions of years the shape of land and seas has changed, mountains have gotten higher or experienced landslides, and continental plains crossed the Earth. Some scientists have predicted that the delicate balance is threatened by overcrowding. Illegal logging of trees leads to deforestation, the use of bio-fossil fuels and the greenhouse effect which makes carbon dioxide trap the heat of the Sun in the Earth's atmosphere and does not let it out.
a.1. EARLY LIFE ON EARTH
Do your know? That the first life on earth was not dinosaurs, but the first life on earth were primitive plants that took in carbon dioxide and gave off oxygen during photosynthesis, maybe the earth also did not have a cycle that supports life, the cycle of life was finally formed because of the primitive plants that first grew on earth that collects carbon dioxide and redistributes it through photosynthesis in the form of oxygen, oxygen that helps living things on earth to breathe, without enough oxygen it is impossible for humans, animals and plants to live.
After it was felt that there was enough oxygen on earth to support life, then animals evolved. Knowledge of the shape of the evolved earth is obtained by finding fossils contained in a rock. Life on earth can only survive if the form of environmental conditions on earth is suitable for these living things. For example, even though dinosaurs were living creatures that managed to live on earth, but since about 65 million years ago they became extinct.
a.2. DESTRUCTION EART BY HUMAN HANDS
Destruction that occurs on earth a lot because it is caused by human hands, this is the question most asked by scientists. Will humans also experience extinction?
Extinctions that occurred on earth have been experienced by dinosaurs who became passive victims of changes in the earth, where currently the destruction of the earth is mostly caused by humans, the number of human populations is increasing, currently the number of humans is estimated at 7 billion humans, all of which must produce waste and waste. pollution, in addition to changes in the earth that is experiencing global warming due to the depletion of the ozone layer (the layer in the earth's atmosphere that protects the earth from ultraviolet radiation that damages ecosystems on Earth).
a.3. THE EARTH IS Spherical, THERE IS NO FLAT EARTH
The statement that the shape of the earth is round has been around since at least the 5th century BC, Greek philosophers stated the Earth was round, until the 3rd century BC they carried out various experiments to prove that the earth was round, even Columbus was willing to sail around the earth only to prove that the earth is round. These various experiments are still being questioned by some people, so that the proof of the spherical shape of the earth was only successful when humans succeeded in launching the first satellite in the late 1950s, that's when it was only seen from space that the shape of the earth was round.
The spherical shape of the earth continues to be observed by humans where the surface of the earth turns out to contain a lot of water, more than two-thirds of the earth's surface is covered with water, that is the difference between the earth and the other planets. Even the water contained in the Sahara Desert of North Africa is more than the amount of water that is on Venus. Water provides a dynamic cycle for the survival of the earth. Erosion, tides, weather patterns, and life forms of the earth's inhabitants are very dependent on water, what if our earth did not have water, surely humans, animals and plants would never live on earth, then Oxygen and Water can never be separated.
B. EARTH STRUCTURE
There have been many mentions related to the shape of the earth's surface above, so knowing how the structure of the earth is needed to broaden our knowledge. Basically our earth has four parts namely interior, lithosphere, hydrosphere, and atmosphere from four different parts which have different properties.
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| Design by Bameswara |
b.1. Interior Eart
Material results from isimological investigations, found information that the structure of the Earth's interior. The shape of the inner structure is converging in layers. The field is limited by the boundary (discontinuous) field. The first discontinuous plane is proposed at a distance of 60 km from the earth's surface and is named the mohorovicic discontinuous plane. Discontinuous fields are also found at a distance of 1,200 Km and 2,900 Km and there is a sphere with a radius of 3,500 Km to the deepest center of the earth, this bull is called the Earth's core.
A scientist named Sues and Wechert divide the structure of the earth as shown in the picture above, the division is as follows:
- The earth's crust with a thickness of 30 to 70 km is made up of alkaline and acidic rocks. The density of this layer is about 2.7 Kg/m³.
- Earth sheath or silicate scales with a thickness of ± 1,200 Km. The density of this layer is from 3.4 Kg/m to 4 Kg/m³. Earth's crust and mantle is the lithosphere.
- The intermediate layer or chalkosphere, which is oxide and sulfide scales, is 1,700 km thick and has a specific gravity of 6.4 kg/m.
- An iron-nickel or barispheric core having a radius of 3,500 Km with a specific gravity of 9.6 Kg/m³.
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