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The Origin of the Earth The true origin of the earth is a topic that has been debated for a number of years and there is still not a definite answer The most widely accepted theory of today has the earth being formed with the solar nebula model This model says that our solar system started off as a ball of gasses The sun and the planets were formed from a ball of gasses that contained 99 hydrogen and helium There was only about 1 of some of the heavier elements oxygen silicon iron nickel and others noble gasses The huge ball of gasses was spinning and the force of the spin caused gravity on the gasses Gravity caused this huge ball of gasses to condense over millions of years Eventually most of the gasses formed a central body called the proto-sun It looked like a flat circle with a bulged in the center where the proto-sun was Only about 10 of the gasses were left as the atmosphere of the proto-sun As time passed gravity caused small balls of gasses to form this is the formation of early planets Chemical forces caused the helium and hydrogen to form into small grains Heinz 12 Gravity caused these grains to pull together to form large ball and eventually large enough to be a planet If you look at the age of the earth as one year it formed in a week The early earth consisted of billions and billions of tons of iron nickel oxygen and silicon There was a small amount of aluminum and magnesium Eventually all of these elements formed into a sphere with a diameter of about 8000 miles The early earth was gasses dust particles and large chunks of solid matter As all of these were forced together by gravity they formed heat The sphere started to get hotter and hotter These extreme high temperatures formed in the center of
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