Forensic Science Fundamentals and Investigations

Criminal Justice

Quiz 13 :

Soil Examination

Quiz 13 :

Soil Examination

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Loam and peat are two subcategories of soil.
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False

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Continental sand is composed mostly of quartz, mica, feldspar, and dark-colored minerals like hornblende or magnetite.If a high percentage of quartz is present, it means the sand is:
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A

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The uniqueness of soil composition has helped locate burial sites and link suspects to crime scenes.
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True

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Sand is formed by the action of:
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Volcanic sand is usually dark in color due to the presence of:
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What term describes the organic material contained in soil which includes decaying plants and animals? ______________________________.
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Calcium carbonate will sometimes precipitate out of seawater, forming a coat of hard particles that resemble the layers of an onion.These layers eventually form small, round structures called _____________________________.
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Sand grains carried by water:
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Volcanic sand is very:
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Soils form in horizons, or layers, that are more or less parallel to the earth's surface.
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An Austrian, Dr.Hans Gross, is believed to be one of the first forensic scientists to apply science to crime investigation.But Dr.Gross did not believe in the value of physical evidence, including soils found in the crime scene.
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Sand from different locations contains different combinations of minerals.The most common mineral found in sand is:
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Distinct layers of soil are commonly labeled either O, A, E, B, C, or R.A term used to describe this sequence of layers is _______________________________.
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The E horizon of soil is also called topsoil.
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Soil with more than fifty percent decaying organic material is called peaty soil.
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The size of sand grains can be anywhere from:
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Soil contains minerals, decaying organisms, water, and air, all in varying amounts.
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A German investigator, Georg Popp, is credited with being the first forensic scientist to use soil evidence to solve a crime.
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Sand grains are classified as:
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The materials that make up a type of soil determine that soil's chemical properties.An important chemical property of soil is whether it is acidic or _______________________________.
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