How the world was created
Howthe world was created
Howthe World was created
Throughthe movie, SolarSystem History: How Was the Earth Formed? Weget an account of the creation of the earth through the guidance ofKateRavilious. It is an amazing documentary because, a lot of earth’sformation was attained with little dust and gas.
Itbegan when a terrific bang occurred in the galaxy making a star toblast. Subsequently, it hurled out masses of dust and gas. Thisoccurred nearly five billion years ago.Thedebris then collided with an adjacent cloud of gas, and joined thecomponents to form the solar system. The explosion’s energy causedthe dust mixture to be hot to the extent that the elements reactedand began to form dust particles. Slowly, the dust particles began togather, turned into bigger lumps, and through gravity, the mixturepulled together(ABDHMedia-Space, 2015).Ultimately, the central mass became hot and thick and started toproduce energy, kindling the atomic fires. Through this, the sun wasborn, and the remaining mixture of dust whirled around the star,circulating out into a disc.
Steadily,the sun enlarged and the dusty circle cooled. The dust gathered intograins, then bumps, to stones, and eventually,intoplanetesimals, which are pieces of rocks large enough to possess agravitational field. These took a period of more than a millionyears. Some of the planetesimals were the embryos of the planets intoday’s solar system. The planets arranged themselves and settledat a safe distance away from the sun and located their orbit. Theearth established its path from the sun as the third planet.Approximately four and a half million years ago, one of thecollisions almost destroyed the earth. It is alleged to beresponsible for the formation of the moon. Some planetesimals fusedwith the Earth, and the evicted lump, the moon, started to orbitaround Earth.
Thistheory’s evidence emanates from a sample of dust on the moon. Itshows that the moon contains rocks, which are similar to those in theupperstrata of the Earth`s crust and mantle. Since the formation of themoon occurred through a crash,the earth was forced to undergo a tilt from the sun. It tiltedsideways from 10to23.50.Consequently, the seasons of the earth began. Winter for thehemisphere slanted from the sun, while summer for the hemispheresloped towards the sun. During the early days when the earth wascreated, it was completely different from today’s planet. It didnot have a mantle, crust, and core, but all the components were mixedevenly. Continents, oceans, and the atmosphere were not present.Through planetary compression, radioactive decay, and meteoritecollisions the earth became hot to 2,0000C,which is iron’s melting point, to form the core.
Eventually,it cooled and developed into a core, mantle and crust. The layeringinitiated plate tectonics on the surface, and the Earth started tolook like today’s planet. Most geologists believe that the Earth`satmosphere and oceans occurred nearly four billion years ago throughseveral volcanic burps. The early atmosphere did not have plentyoxygen, unlike today. Nevertheless, the oceans and atmosphere allowedlife to acquire a foothold, and the primary single-celled organismevolved roughly four billion years ago. Slowly, the algae altered thecomposition of the atmosphere, by releasing oxygen to significantamounts. Hence, complex lives began to evolve.
Inconclusion, themovie, SolarSystem History: How Was the Earth Formed?Gives an explanation of the creation of the earth. It began with abang in the galaxy that led to a series of events centred on massesof dust and gas, which joined and became hot to create the sun. Afterthe sun, the planets including the earth were formed through thecoalition of dust grains to form the planetesimals. Through acollision, a lump was ejected from the earth and became the presentday moon. Through radioactive decay, the earth became hot and melted.Later, it cooled to form the core, mantle and crust, which arebelieved to initiate plate tectonics that made the earth attain thetoday’s continents.
ABDHMedia-Space, (2015). Solar System History: How Was the EarthFormed? Retrieved fromhttps://www.youtube.com/watch?v=ys5hmBkyvag
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