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Ocean Formation

Ocean Formation. How did the oceans form??. Formation of the Ocean. Earth is approximately 4.6 Billion Years Old Oceans formed 2 possible ways: Comets Volcanism. Comets. Comets hit the Earth and released water The water filled the ocean basins over geologic time. Volcanism.

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Ocean Formation

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  1. Ocean Formation How did the oceans form??

  2. Formation of the Ocean • Earth is approximately 4.6 Billion Years Old • Oceans formed 2 possible ways: • Comets • Volcanism

  3. Comets • Comets hit the Earth and released water • The water filled the ocean basins over geologic time

  4. Volcanism • Volcanoes release Water Vapor, Carbon Dioxide and other gases • Water vapor condensed to form water droplets that formed the oceans

  5. Chemical Properties of Seawater • 96.5% Water • 3.5% Dissolved salts • NaCl is most abundant

  6. Salinity • Measure of the amount of dissolved salts in seawater • Expressed in ppt (Parts per thousand) 35 ppt

  7. How Does the Water Become Salty??? • Volcanic gases contain chlorine and sulfur dioxide which dissolve into water • Weathering of rocks and minerals

  8. Salt Removal • Sea Spray • Evaporate Formation • Water evaporates and salt is left behind

  9. Desalinization • Processes that turns saltwater into freshwater • Distillation • Water heated and evaporated • Water vapor cooled and condensed as freshwater

  10. Reverse Osmosis • Seawater pressed through semi permeable membrane that allows water, not NaCl to pass through

  11. Why would we want to remove salt? • Humans need freshwater to survive • Of the 3% of freshwater, most is unavailable to us! (glaciers) • In case of drought conditions, water would still be available

  12. Negative Effects • Environmental concerns • Loss of habitat, waste (salt) disposal • Costs Money and uses Energy • Greenhouse gas emissions

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