Although it is the most studied planet, it cannot be completely understood in isolation. Origin and evolution of life and introduction to classification biology notes fig. Astr 380 the history of the earth the real purpose of stonehenge. Compare the different hypotheses explaining the origin of the solar system. Microsoft powerpoint history of life on earth and classification. History the fossil record documents the main events in the. Describe the characteristics of earth that are necessary to support life. Deciphering the planets history and processes could improve the ability to predict catastrophes like earthquakes and volcanoes, to manage earth s resources, and. Astr 380 the history of the earth university of maryland. The crust is a very small fraction of earth s mass, so it is not a very useful indicator of bulk composition. History of earth beginnings earth was believed to be formed about 4. Notes origin and evolution of life and introduction to.
Earth made the origin of life possible colonization of land animals origin of solar. Origin and evolution of earth division on earth and life. Four and a half billion years ago, the young earth was a hellish placea seething chaos of meteorite impacts, volcanoes belching noxious gases, and lightning flashing through a thin, torrid. Specific learning outcomes describe the different hypotheses explaining the origin of the solar system. This is a hard question to avoid in our fueldriven economies. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. It is not only the study of the earth as we see it today, but the history of the earth as it has evolved to. Therefore, it is reasonable to assume that both water and rare gases were at the earth s surface virtually at the time of formation of the earth. The chemistry of meteorites and sun provide constraints on the composition of the bulk of the earth. Sources of water water reached earth by one of two processes. The most important information about composition comes from looking around us. Introduction and origin of the earth geology, what is it. Origin and evolution of earth research questions for a changing planet questions about the origins and nature of earth have long preoccupied human thought and the scientific endeavor. It includes not only the surface process which have shaped the earth s surface, but the study of the ocean floors, and the interior of the earth.
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