Order the following steps in the formation of a Terrestial planet chronoligically. gravitational collapse, accretion, outgassing condentation, differentiation.
Order the following steps in the formation of a Terrestial planet chronoligically. gravitational collapse, accretion, outgassing condentation, differentiation.
Gravitational collapse and accretion of primordial gas and dust cloud gave birth to the Solar System.
Condensation is the process of forming solid particles from the solar nebula. The cloud of interstellar gas and dust condensed to form the entire solar system, including the sun and planets.
During the chemical evolution of earth, the outgassing of volatile substances trapped within the accreting planet probably formed the earliest atmosphere.
During the accretionary stages of the earth, it was chemically homogeneous throughout. The young earth was impacted by asteroids, comets, and other falling debris. The heat produced by the impact, along with heat due to gravitational compression and heat from decaying radioactive elements caused the earth to partially melt.
In the partially melted earth, gravity pulled down most of the iron and nickel to form the core. The sinking iron also releases large amount of gravitational energy by friction which causes the earth to get heated even more. The lighter minerals material such as silicon, magnesium, aluminum, and oxygen compound rose upward and formed mantle and crust. This process is called density stratification.
The partial melting inside the earth and outgassing of volatiles separated the earth into layers of different compositions. This phenomenon is termed differentiation. As the interior of the earth differentiated, the less-dense liquids material rose from the melt toward the surface and crystallized to form earth's crust.
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