Geology 1

24 July 2022
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question
The ________ proposes that the bodies of our solar system formed at essentially the same time from a rotating cloud of gases and dust.
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Nebular theory
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The composition of the core of the Earth is thought to be ________.
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solid iron-nickel alloy
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Active mountain belts are most likely to be found ________.
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along the margins of continents
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________ is often paraphrased as "the present is the key to the past."
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uniformitarianism
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The ________ is thought to be a liquid, metallic region in the Earth's interior.
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outer core
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Earth's physical environment is traditionally divided into the hydrosphere, atmosphere, and the solid Earth. Remembering the scientific method, why do you think that scientists tend to categorize and classify various features, phenomena, and characteristics of the natural world into groups or subdivisions? Also, are there potential pitfalls or problems if we only consider the natural world as individual groups or categories rather than as a whole?
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Scientists organize and classify into group and subdivisions because the data are collected to answer a specific question or hypothesis. The potential problems are that scientists may become very focused on a research question that they may not realize that an answer may lie outside their discipline.
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All of the following are possible steps of scientific investigation EXCEPT for ________.
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assumption of conclusions without prior experimentation or observation
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The asthenosphere is actually a part of the ________ of the Earth.
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mantle
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The ________ refers to the sum total of all life on Earth.
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biosphere
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The ________ is the thinnest layer of the Earth.
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crust
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Which of the following is an Earth layer defined based on its chemical composition?
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crust
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The most prominent feature on the ocean floor are the ________.
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oceanic ridges
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In correct order from the center outward, Earth includes which units?
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inner core, outer core, mantle, crust
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Which of the following best describes the Earth system?
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The Earth system has a nearly endless array of interconnected subsystems.
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Which of the following choices best illustrates the proper order of the steps in a scientific investigation?
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Raise a question from the natural world, construct a hypothesis, test the hypothesis.