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Related Flashcards
Related Topics
Cards In This Set
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Origin, classification, and composition of earth materials and internal and external processes
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Physical geology
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A multidisciplinary approach ---earths evolution, changes in lands and seas, mountain building and erosion, fossil changes through time, history of the solar system
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Historical geology
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Mother of paleontology
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Mary anning
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Possible explanation, educated guess
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Hypothesis
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Proven facts (may not be 100%); when a hypothesis is confirmed after many tests and is supported by all relevant observations
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Theory
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Law of gravtiy, laws of thermodynamics, laws of motion, etc.
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Scientific law
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What is the closest theory to a law in geology?
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Plate tectonics
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What was the meditteranean sea originally called?
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The tethys sea
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What was the tethys sea?
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A major ocean located where the meditteranean is now
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What kind of samples from the bottom of the oceans have provided information of the early meditteranean and other oceans?
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Drill-core samples
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How is the age of the earth calculated?
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Through radioactive decay
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Oldest known earth material is how many years old? what was it? where was it found?
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4.2 billion years; zircon crystals; western austrailia
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How old is the earth based on half-life measurements from decay of radioactive elements?
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4.6 billion years old
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Outer stoney layre of earth that includes the crust and upper mantle
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Lithosphere
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Most geological activities occur along _____ ______
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Plate boundaries
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