How the Sea Comes

Earth was born about 4.5 billion years ago. According to the story, our solar system called the Milky Way, composed of a collection of dust (nebula) in space in the universe which subsequently grow into clumps rocks from a small start up to the size of the asteroid with a radius of hundreds of kilometers. The next space rocks collided with each other, where the initial collision that happened is still slow. Due to gravity, space rocks that collide with each other and together form a mass of rock that later became the forerunner (embryo) of the earth. Over time more and more rocks into one, the embryo of the earth grows larger. In line with the growing embryo of the earth, the greater the attractive force of gravity so that the space rocks that have started the sooner hit the earth's surface of the embryo that has grown increasingly large. Due to the tremendous tumbukan2 timbulah ledakan2 that it is definitely very powerful kawah2 also resulting in the formation of a very large and well besar2an heat release.

Sea itself historically formed 4.4 billion years ago, which initially are very acidic with boiling water (with temperatures around 100C) because the heat of the earth at that time. Acid sea water occurs because at that time the earth's atmosphere filled with carbon dioxide. Water acidity is what causes the high weathering that occurs that produces salts which cause the sea water becomes salty as it is today. At that time, the tsunami waves often occur because of frequent asteroid hit the earth. Ocean tides that occur at that type of mammoth alias 'ruar normal' height because the distance the moon is so close to the earth.

Before we continue the discussion, there is one question which is annoying to be asked here, namely "where the water that formed Earth's oceans come from?" That's a difficult question to answer, and the experts themselves have some version of it. One version I have ever read is that at the time, the earth began to cool due to start decreasing volcanic activity, in addition to the earth's atmosphere at that time covered by volcanic dust which resulted in obstruction of sunlight to enter the earth. As a result, moisture in the atmosphere from condensing and forming rain. This rain (which may be the type of mammoth rain too) that fills the basin-formed depressions in the earth to the ocean.

Slowly, the amount of carbon dioxide that is diatmosfer began to decrease due to dissolved in seawater and react with carbonate ions to form calcium carbonate. As a result, the sky started to become clear that to re-enter the sunlight shining on the earth and resulted in the evaporation process so that the volume of sea water on Earth is also experiencing a reduction and the parts of the earth which was originally under water began to dry. Rock weathering process continues due to rains that occurred and was carried into the oceans, causing sea water more salty.

At 3.8 billion years ago, the planet Earth began to look blue because the sea that had formed them. The earth's temperature gets colder because the water in the ocean plays a role in absorbing heat energy that exists, but At about the estimated there are no life forms on earth. Life on earth, according to experts, starting from the sea (life begin in the ocean). However, it remains a hotly debated until now exactly when it happened and the beginning of life on the ocean where? whether on the sea floor or on the surface? Results of geological discovery in 1971 on the rocks in South Africa (the estimated age of 3.2 to 4 billion years old) showed the existence of rice-sized fossils of primitive bacteria that are estimated to live in the boiling mud on the seabed.