Archive for February, 2013
Proto-phase of Earth
Formed about 4.54 billion years ago by accretion of planetesimals small number in the thousands, a company called proto-Earth. Our plane was accretion of asteroids and their collisions. This has led to the generation of a huge amount of heat. This, combined with an increase in density, leading to the fusion of heavy elements such as iron and nickel, which was included in the composition proto-Earth.
Was in the molten state of the world during this period decreased these heavy items and are concentrated in the center of mass of the aircraft, which constitutes the core of the earth hot metal. This separation of primitive elements of liquid metal, 10 million years after the proto-Earth was formed. As “Iron disaster he created the layered structure of the earth, with a solid metal core, the formation of a liquid metal that surrounds them with a solid crust later. Catastrophe iron was responsible for the creation of the magnetic field Earth fluid flows metal sheath around a solid core generated.
Floods are the most common natural and widespread that millions of people are affected worldwide. Flood, simply defined, relatively dry areas of flooding or excess water from low altitude. Often spell danger to life and property, flooding and heavy rains are dangers and disasters that afflict humanity. A steady increase in the quantity of water masses due to persistent rain is considered the main cause of flooding.
Flooding occurs when the volume of water is higher than the normal quantity of a plane generally contain water. High water along the coast is considered to be a seasonal phenomenon. But a great flood, creating havoc in the surrounding areas, thus endangering the life or other areas of pressure.