course outcome 3 Flashcards
earth's resources (104 cards)
energy resources
metals
non-metallic resources
renewable resources
nonrenewable resources
types of geologic resources
petroleum (oil and natural gas), coal,
uranium, geothermal resources
energy resources
iron, copper, aluminum, lead, zinc, gold, silver, platinum.
metals
sand and gravel, limestone, building
stone, salt, sulfur, gems, gypsum, phosphates, groundwater, etc
non-metallic resources
replenished by natural
processes fast enough that people can use them
continuously.
renewable resources
form very slowly and are
extracted and used must faster than they can be
renewed naturally.
nonrenewable resources
the total
amount of any given
geologic material of
potential economic
interest, discovered and
undiscovered
resource
discovered
deposits of geologic
resources that can be
extracted economically
and legally under
present conditions
reserves
It refers to the combination of
various primary energy resources
(carbon-based and non-carbon
based) used to meet the energy
needs in a geographic region.
These primary energy resources
are used for:
Power generation
Fuel for transport
Heating and Cooling of residential
areas and industrial
energy mix
carbon-based sources
noncarbon-based sources
renewable sources
non-renewable sources
Classification of energy sources
obtained from the oxidation or burning of carbon
carbon-based sources
Do not generate carbon dioxide
Noncarbon-based sources
naturally replenished in a human timescale; constantly
replaced
renewable sources
finite and becomes depleted over time with continued use
non-renewable sources
a sedimentary rock that
forms from the compaction of
plant material that has not
completely decayed.
Peat – unconsolidated plant
material.
Lignite– (brown coal) is soft and
crumbly.
Sub-bituminous and
bituminous – (soft coal) is black
and dusty, burns with a smoky
flame, is commonly strip mined.
Anthracite – (hard coal), shiny
and dust-free, burns with a
smokeless flame, low level
metamorphic rock.
coal
occurs in underground pools and
requires:
Source rock rich in organic
matter.
Reservoir rock in which it can be
stored and transmitted (for
example, sandstone).
Structural (or Oil) trap, a set of
conditions holding rock in
reservoir rock and preventing
migration.
Deep burial and sufficient time
to cook the oil and gas out of the
organic matter.
petroleum and natural gas
regions underlain by
one or more oil pools.
Oil and natural gas are removed
through wells drilled down into
an oil trap within a reservoir
rock.
Negative environmental effects
resulting from oil recovery and
transport include oil spills,
brine contamination of surface
water, and ground subsidence
oil fields
currently estimated
to last another 50 years at current
rates of use, worldwide
oil reserves
danger to miners
contribution to climate change (mainly carbon dioxide)
atmospheric pollution in the form of acid rain (mainly
sulfuric acid)
surface and groundwater pollution due to acid mine
drainage (mainly sulfuric acid)
emission of toxic elements to the atmosphere (especially
mercury)
ash waste impoundment failures
effects of coal mining and use
ost rocks are largely left in
place and coal is removed by trucks, conveyor bells, or
rail.
underground mining
oal seams are at a shallow level and
the relatively thin overburden is removed.
surface mining
large bucket machines first remove the
overburden followed by the coal
strip mining
explosives remove the
overburden and the exposed coal is removed
mountaintop removal mining
caused by atmospheric
emissions of sulfur dioxide and
nitrogen oxides from burning fossil
fuels, mainly coal.
Coal contains varying amounts of
sulfur, commonly in the form of
pyrite, which becomes oxidized to
sulfur dioxide when the coal is
burned.
Sulfur in the form of pyrite can be
removed mechanically, addition of
limestone and water to flue gases
acid rain