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Fundamental facts you should know about the earth


Fundamental facts you should know about the earth


Still in the quest to perfectly understand the earth, it has made me to take a further dive into the earth study and I have come up with these:


  1. The Earth is about 4.6 billion years old:

From the Big-bang theory, we have learnt that the earth came into existence as a result of collusion of solar gases and dusts which later solidified under solar gravity to form the earth.


  1. Evolution of life occurred in the Earth:

Life evolved on this earth from the primitive life forms to the present day life (angiosperms and Homo- sapiens). These evidences are carefully preserved in the rocks.

  1. The Earth is always changing

The surface of the earth as we know is directly under the influence of certain forces which alter / change it. These forces can be erosional, weathering, or tectonic / orogenic. So the fact remains that the paleo- surface of the earth is not the same as the present.

  1. Rocks melt

Rocks melt. The rocks (mantle) beneath the surface of the earth melt. Whenever this happens, hot lava and gases are thrown up to the earth’s surface. This results in formation of mountains.
The melting is as a result of the very high temperature beneath the surface. Please note that the higher the pressure, the greater the melting point of rocks beneath the earth’s surface and vice versa.

  1. The mantle is hot

The mantle (this is directly below the Earth’s crust) is a hot, convecting flowing solid. It The outer core of the earth contains liquid iron and nickel metal and  is liquid-like. But deep down inside the inner core (here the pressure increases) the iron / nickel is solid.

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