NRM 140 EXAM 3 CH 7,8 QUESTIONS
AND ANSWERS 100% PASS
Fluorinated hydrocarbons/F-gases - ANS They are powerful greenhouse gases, their
concentration is rising sharply, and there are no regulations in place. Deplete Ozone layer.
Mainly come from electricity and heat production
Industry - ANS 21% of total greenhouse gases. Internal combustion engines, industrial
processes, fugitive emissions, and cement production fall into this category.
Fugitive emissions - ANS Are accidental release of gases from pressurized systems or
occasional release of small amounts of gases from industrial processes. They occur mainly
during the extraction, transport, storage and processing of fossil fuels and largely consist of CH4.
Transportation - ANS 14%.
Such as evaporation of gasoline and other liquid fuels, accidental release of natural gas that
includes methane, and vapors released from hot engines.
Buildings - ANS 6% by burning fossil fuels for heat.
Coal - ANS Biggest contributor is China 30%. Coal power plants are only about 40% efficient
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, Originated in swamps, where tree-sized fern relatives fell into water when they died, and were
covered by layers of sediment. The organic matter was compressed and heated, carbonizing it.
Said to be cheapest
Shaft mines - ANS Require tunneling through an overburden to get to coal seams, then
blasting the coal out, and bringing it to the surface. This is difficult, dirty, and dangerous. A
tunnel collapse can trap or kill miners, and the dust, if inhaled, can result in a disease called
black lung
Black lung - ANS lung disease caused by inhaling coal dust
Open pit mining/Remediation - ANS a mining technique that uses a large visible pit or hole in
the ground. First you have to get rid of the overburden (soil and rock) and put it somewhere
else.
Harmful because:
- changes hydrology (floods)
- pollute water with harmful chemicals
Remediation: Holes are fixed and the land is covered in soil and grass/replanted
Electrostatic precipitators - ANS Ash from coal made as it burns is run it through charged
screens that strips electrons off the dust. Dust is then attracted to another and coal ash is
caught. The slurry is pumped into a pond where the water evaporates, leaving the ash behind
Fly ash settling ponds - ANS where coal ash will be left and is often next to rivers. This ash
contains a number of heavy metals such as lead, arsenic, manganese, and barium, to name a
few. It can fill a riverbed and make its water unsafe to drink for years to come.
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
AND ANSWERS 100% PASS
Fluorinated hydrocarbons/F-gases - ANS They are powerful greenhouse gases, their
concentration is rising sharply, and there are no regulations in place. Deplete Ozone layer.
Mainly come from electricity and heat production
Industry - ANS 21% of total greenhouse gases. Internal combustion engines, industrial
processes, fugitive emissions, and cement production fall into this category.
Fugitive emissions - ANS Are accidental release of gases from pressurized systems or
occasional release of small amounts of gases from industrial processes. They occur mainly
during the extraction, transport, storage and processing of fossil fuels and largely consist of CH4.
Transportation - ANS 14%.
Such as evaporation of gasoline and other liquid fuels, accidental release of natural gas that
includes methane, and vapors released from hot engines.
Buildings - ANS 6% by burning fossil fuels for heat.
Coal - ANS Biggest contributor is China 30%. Coal power plants are only about 40% efficient
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, Originated in swamps, where tree-sized fern relatives fell into water when they died, and were
covered by layers of sediment. The organic matter was compressed and heated, carbonizing it.
Said to be cheapest
Shaft mines - ANS Require tunneling through an overburden to get to coal seams, then
blasting the coal out, and bringing it to the surface. This is difficult, dirty, and dangerous. A
tunnel collapse can trap or kill miners, and the dust, if inhaled, can result in a disease called
black lung
Black lung - ANS lung disease caused by inhaling coal dust
Open pit mining/Remediation - ANS a mining technique that uses a large visible pit or hole in
the ground. First you have to get rid of the overburden (soil and rock) and put it somewhere
else.
Harmful because:
- changes hydrology (floods)
- pollute water with harmful chemicals
Remediation: Holes are fixed and the land is covered in soil and grass/replanted
Electrostatic precipitators - ANS Ash from coal made as it burns is run it through charged
screens that strips electrons off the dust. Dust is then attracted to another and coal ash is
caught. The slurry is pumped into a pond where the water evaporates, leaving the ash behind
Fly ash settling ponds - ANS where coal ash will be left and is often next to rivers. This ash
contains a number of heavy metals such as lead, arsenic, manganese, and barium, to name a
few. It can fill a riverbed and make its water unsafe to drink for years to come.
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
