Earth Sciences 1089F/G Lecture Notes - Lecture 1: Hydrosphere, Algonquin Provincial Park, Life Zone

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Evidence: doppler effect red shift, waves of light are stretched as everything moves away (red waves go away. If galaxies were approaching each other, they"d move towards: ambulance alarm pitch goes up as it"s coming towards you, decreases as it goes away (the sound waves are being stretched, makes pitch go lower) If earth were in the place of venus, the global temperature would raise: raise the oceans, produce water vapour (greenhouse gas; trapping, living things would die (closer to the sun, nothing undergoes photosynthesis, accumulation of carbon dioxide (gathers) If earth were in the place of mars, there"s decrease in incoming solar energy: oceans absorb energy, cools it down. Increase of polar caps, radiation reflects back out to space, therefore cools the planet. Earth as a closed system: energy is exchanged b/w earth and surrounding universe. Mesosphere: solid but flows fluid over long periods of time. Inner core: solid: outer and inner core are composed of the same materials.

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