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the study of earth
physical - materials and processes
historical - origin and development |
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study of the atmosphere
and the process that produce weather and climate |
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tentative explanation for observations
experiments test science can only prove things to be false |
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well tested and widely accepted view that best explains certain observable facts |
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four spheres
that constitute our environment |
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hydrosphere atmosphere biosphere geosphere |
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dynamic mass of liquid that is continually on the move, evaporating from the oceans to the atmosphere, precipitating on land, and running back to the ocean again |
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gaseous portion of a planet; the planet's envelope of air |
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all life on earth; parts of solid earth, hydrosphere, and atmosphere in which living organisms can be found |
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solid earth largest sphere |
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the oceans cover __% of earth's SURFACE |
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compositional divisions of earth |
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what is the difference beween the asthenosphere and the lithosphere? |
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lithosphere - outermost, cool, hard, rigid
asthenosphere - soft, weak, close to melting |
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Where are earth's youngest mountains? |
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circum-Pacific belt and
Alps/Himalayas |
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What is the difference between
shields and stable platforms? |
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sheild - expansive, flat region of deformed crystalline rock
stable platform - shield covered in thin layer of sedimentary rocks |
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three major regions of the ocean floor |
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CONTINENTAL MARGINS - seafloor adjacent to continents
DEEP-OCEAN BASINS - between continental margin & oceanic ridge system (30%s), and
OCEANIC RIDGES - continuously elevated zone |
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open & closed system differences |
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open system - matter and energy flow in and out (hurricane)
closed system - no matter enters or leaves, self contained (car cooling) |
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positive & negative feedback differences |
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negative - maintain system (sweating)
positive - enhance change (earth absorbing sunlight) |
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sources of energy for earth system |
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researches gather facts through observation and formulate scientific hypotheses and theories |
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statement of observable fact
undera a certain set of conditions a certain phenomena will occur paper falls if dropped |
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process by which one rock changes into another |
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unended circulation of earth's water among the hdrosphere, atmosphere, biosphere, and geosphere |
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regions that hold material for periods of time |
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rate of gain/loss of material from a reservoir |
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oceans contain about __% of the planet's total WATER supply |
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97% of total water supply |
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