ERSC 1F90 Lecture Notes - Cross-Bedding, Theophrastus, Geosphere
9 Oct 2011
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Document Summary
Earth is a planet that is small and self-contained. Earth"s four spheres are linked as a system through their interactions. Vary on spatial scales from fractions of a millimeter to thousands of kilometers. Have time scales that range from milliseconds to billions of years. The earth system is also powered by the earth"s interior. Heat remaining from earth"s formation, and heat that is continuously generated by radioactive decay, power the internal processes that produce volcanoes, earthquakes, and mountains. Best defined as all that surrounds us with which we interact . This can be pretty far-reaching (e. g. mars rovers, voyager, etc. ) For this course, although we will talk about the solar system, our environment will be the planet earth shown in the apollo images. From the greek geo (earth) and logos (discourse) The science that pursues an understanding of planet earth. It draws from physics, chemistry and biology - an earth systems.
