What constitutes a mineral? (2.5)
What will be an ideal response?
Answer: Only naturally formed substances are minerals; manufactured materials, such as synthetic gemstones (e.g., cubic zirconia), are not.
A mineral must be a solid with an orderly arrangement of atoms; it cannot be a gas or liquid. Opal, a popular gemstone, consists of silicon and oxygen, the same elements that compose quartz. Opal, however, lacks a highly ordered atomic structure and is not considered a mineral.
Organic compounds, those defined as containing mostly carbon and hydrogen atoms, are not minerals. Table sugar (C12H22O11), therefore, is not a mineral, even though it is a naturally occurring solid with an orderly atomic structure.
The chemical composition of a particular type of mineral can vary slightly (as in the colored varieties of quartz illustrated in Figure 2.10), but the principal constituents are common to all specimens.
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A) UR, Avaris, Nineveh. B) Thebes, Annad, Nineveh. C) Nineveh, Lagash, Thebes. D) Avaris, UR, Nineveh. E) Memphis, UR, Rome.
In larger cities, motor vehicles are better suited than public transit because each traveler takes up far less space, while also having their privacy and convenience
Indicate whether the statement is true or false.
On an orthophoto map, one might expect to find ________
A) distortion-free photographs B) many problems with map distortion C) sketches rather than true projections D) cultural but not physical features E) symbols that are difficult to read
What makes actor-network theory so radical is that it challenges the idea that:
A) people have social networks. B) people understand their environment. C) people cannot live in isolation. D) people have free will. E) people do not have access to resources.