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Cards In This Set
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Earth is about..
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4.5 billion years old
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In the Scientific Method..
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Tested and varified by observations
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Humanity did not spread after European voyages (late 1400s/early 1500s)
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False
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Why did Chinese abandon ocean explorations in 1433?
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Political winds changed
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First man to publish a map of ocean currents
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Ben Franklin
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Glomar Challenge known for..
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Taking first deep sea sediments
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Earth is layered, different densities and thicknesses, how do geologists know?
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Transit times of waves through earth during earthquakes
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Magnetic striping evidence of sea floor spreading and..
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Reversals of the polarity of the Earth's magnetic field.
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Example of an object in buoyant equilbirium..
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Ice cubes, plates on heavier metal
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Early component who's work was not well accepted about continental drift...
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Alfred Wagner
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Youngest floor sea rocks are found..
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Near the rift valleys of mid-ocean ridges
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Hydrothermal vents are located near..
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Active areas of sea floor spreading.
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Basaltic rock...
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Compromises the actual sea floor
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The first life forms on earth arose more than
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3.5 billions years ago
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Challenger Expedition...
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First 100% pure scientific oceanographic expedition.
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