I rented a documentry called How the Earth was Made. It was awesome! I am so glad I am opening up my mind to new information. I took a few notes during the movie, and that's what I will be adding to this post.
Earth is 4.5 BILLION years old. It actually started out as Molten rock, 8,000 degrees F. Very similar to our Sun's surface. Radioactive uranium kept the Earth extremely hot for an extremely long time.The radio active uranium decayed into lead and the Earth cooled. Within 1 billion years, the radioactivity decreased , meteorites collided wth Earth, and it became a Water World. Than, there was rain. For millions and millions of years it rained. High carbon dioxide made the air red and water was green. The temp was 200 degrees F, and the pressure of Carbon Dioxide would crush a human body.
On the Earth's surface, beneath the water, lava still leaked out of cracks leading to the center of the Earth. The mixture of hot water and lava formed Granit rocks. THe Granit cfust formed the first continients. Primitive single-cell lifeforms appeared to live in water since the first oceans. Stromatalites, rock like structures, are the evolution of the first single-cell organisms. Living microorganisms made up the stromatalites.
700 million years ago, one large contintient blocked the hot water at the equator from entering the water at the Poles. This caused the Pole waters to freeze. The ice reflected the Sun away from the Earth, and created Earth's first ice age. Than a volcanic eruption under the ice released Carbon dioxide, which formed the Green House Effect. The Ice was borken. Living organisms evolved. 600 million years ago, oxygen levels formed the Ozone Layer and life forms could leave the waters. Evolution began, Dinosaurs roamed.
Tuesday, May 26, 2009
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