EESA07H3 Lecture : Lecture 2

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15 Apr 2011
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Inland sea: 3 sides surrounded by land, small salinity, 1 side connected to ocean www. notesolution. com: not all seas fall in above definitive category. The caspian sea, which is not really a sea but instead the world"s largest lake. 2 possible sources of water on earth: interior earth. core of earth called mantle , which has composition similar to meteorites. maybe by volcanic eruptions- as planet cools, it formed clouds- it rained for thousands of years. evidence that oldest sedimentary rock on earth is 3. 9 bya indicates that oceans have been on earth for approximately 4by: outer space. pictures of earth"s dayglows , uv light emitted by atomic oxygen in upper troposphere when it absorbs electromagnetic energy from sun. dayglows show dark spots which is same motion as meteoritic materials. comet made of rock and water in form of ice- earth hit by thousands of comets- leaving water in oceans.

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