CIN205H5 Lecture Notes - Lecture 3: Seismic Wave, Ocean Current, Water Cycle

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Matter, the stuff that takes up space, is being worked on by energy in various forms. Energy is either from within (internal) or external. Internal energy (heat within the earth): drives deep processes: uplift (mountain building, formation of continents and oceans basins, earthquakes, volcanoes. External energy (solar) helps drive surface processes: erosion, floods, landslides, coastal processes. Drives the water cycle, ocean circulation and weather. Earth materials + energy = process [people] -> change. Note: once people interfere with the processes, process and change becomes a hazard. Energy in all geologic processes is conserved but it is converted from one form to another: internal heat. Incoming light converted to heat in atmosphere, oceans, and lands: gravity. Creates pressure within the earth: mechanical energy. Seismic waves, ocean waves and tsunami (energy traveling through matter) Plays a big role in deterring composition of the atmosphere. Includes humans: people have one of the largest influences of any organism in earth"s history.

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