chapter 2 QUIZ-History of Oceanography – Flashcards
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What % of water on earth is contained in the oceans?
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97.5%
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T or F: Could water on earth have come from outer space?
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True; From meteorites containing frozen ice.
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True? or False?: Oceans, or evidence of oceans have been observed on other planets.
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True. Mars has mountainside valleys which look like runoff erosion.
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What is the average depth of the oceans on the earth?
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3,796 meters
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When were the islands of Hawaii first discovered by humans?
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450-600 A.D.
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Which European voyagers first set foot on North America?
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The Vikings
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Accurate time keeping was essential for determining what important navigational parameter at sea?
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Longitude
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Which expedition is known as the first which was organized primarily with the goal of doing marine science?
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The Challenger
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How old is the earth? (according to old age thry)
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4.6 billion years old
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What is a good characteristic of a scientific hypothesis?
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It's testability. Easy to test, or hard? (& Specificity also)
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What significant navigational aid did the Chinese invent?
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The magnetic compass
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Name one benefit and one drawback of using satellites for Oceanographic research.
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1-They can take a broad picture of entire ocean 2- Yet, they can only measure very shallow depths where light is detected.
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The process that separates light and heavy materials which results in a layered system, during planetary formation is called what?
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Density Stratification
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The theorized early steps in the evolution of early life from simple organic building blocks is called what?
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Biosynthesis
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What are three well known contemporary oceanographic research institutions?
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1-SCRIPPS w/ UC San Diego 2- Woods Hole in Massachusetts 3-Florida Institute of Oceanography
