Fill This Form To Receive Instant Help
Homework answers / question archive / 1)The EROEI must be ____________ for any fuel to be worth harvesting
1)The EROEI must be ____________ for any fuel to be worth harvesting.
A. positive
B. negative
C. zero
D. flexible
E. unchangeable
A. Photovoltaic cells have a lot of moving parts that produce noise.
B. Sunlight is intermittent, especially in high latitude locations.
C. It is still very expensive in terms of start-up costs.
D. Both B and C
E. All of the above
A. In a boiling water reactor, the water heated by fuel rods is never exposed to the turbine.
B. In a boiling water reactor, steam is produced outside the reactor core.
C. In a pressure water reactor, only the turbine is exposed to radiation during electricity production.
D. In a pressure water reactor, steam is produced in the reactor core itself.
E. In a pressure water reactor, the steam that turns the turbine is not exposed to radiation.
A. recoverable oil that is found in rock, sand, or clay whose extraction is cheap and environmentally sound
B. recoverable oil that is found in rock, sand, or clay whose extraction is expensive and environmentally costly
C. unrecoverable oil that is found in rock below natural gas deposits
D. unrecoverable oil that is found in rock, sand, or clay whose extraction is cheap and environmentally sound
E. unrecoverable oil that is found in deep below the ocean floor
A. with low temperatures
B. in areas with highly oxygenated sediments
C. with low rates of decomposition
D. of rapid decomposition
E. with little vegetation
A. in military waste disposal sites
B. in underground in emptied magma chambers
C. in on-site in steel-lined pools
D. in developing countries
E. in long-term storage locations
A. pesticides
B. plastics
C. soaps
D. medicines
E. all of the above
A.CCS technologies are still being developed but show promise as a way to continue to use coal as a source of electricity while reducing CO2 emissions to the atmosphere.
B. CCS takes CO2 from the coal burning emissions using solvents before purification for industrial and commercial purposes.
C. CCS collects CO2 from the emissions from coal burning and buries it in old or unminable coal seams.
D. CCS concentrates CO2 from the coal burning emissions using solvents that allow more efficient release to the surrounding air.
E. CCS removes CO2 from the emissions from coal burning and injects it into depleted oil and gas reservoirs or deep underground saline formations.
A. methane
B. carbon monoxide
C. carbon dioxide
D. pyrosomes
E. liquefied petroleum gas
A. the potentially significant damage to lobster and other fisheries
B. the discrimination within local communities for access to renewable energy
C. the impact of decreased electricity rates to local municipalities
D. the likelihood of increased competition from other forms of renewable energy
E. the involvement of more multinational corporations
A. offshore exploration
B. desalination
C. development of vertical farming
D. conservation
E. space exploration
A. the water and soil contamination by acid drainage
B. the damage to forests caused by mountain top removal
C. soil compaction causing increased storm water runoff and flooding
D. the release of tons of toxic ash from incinerators
E. the burial and damage to streams caused by the dumping of overburden
A. methane; acid
B. carbonates; bases
C. nitrates; acids
D. arsenic; bases
E. sulfates; acids
A. Wind is intermittent.
B. Wind turbines are expensive to build.
C. Wind turbines can create noise.
D. Some people think turbines are an eyesore.
E. All of the above
A. Geothermal
B. Wind
C. Hydroelectric
D. Solar
E. Biomass
A. They have a higher EROEI than conventional sources.
B. There are abundant reserves in North America.
C. They are easier and cheaper to extract than conventional sources.
D. Their extraction is more environmentally friendly than conventional extraction.
E. They are cleaner to extract and burn than conventional sources.
A. Over-producing
B. Over-hauling
C. Over-growing
D. Over-grazing
E. Over-harvesting
A. Hydraulic mining
B. Deep mining
C. Surface strip mining
D. Fracking
E. Subsurface underground mining
A. Renewable
B. Sustainable
C. Non-renewable
D. Fossil fuel
E. Reusable
A. It is a renewable resource.
B. It has a high-energy content.
C. Mining coal causes environmental damage.
D. Burning coal creates pollution.
E. It is formed over time by the compression and heating of peat.
A. alteration of river salinity and changes in pH
B. altered water flow and reduced issues with sedimentation and erosion
C. habitat destruction and alteration of river sediment deposition
D. acid deposition and damage to fish breeding areas
E. increased water flow and decreased rainfall
A. A country can pay to have all of its energy imported from other countries without having to borrow money.
B. A country uses a hybrid plan of energy production and energy imports to provide a stable supply of electricity for its citizens.
C. A country has access to enough reliable and affordable energy resources to meet its needs.
D. A country can meet of all of its energy needs without importing any fuel.
E. None of the above
A. the resulting carbonic acid, which leads to acid rain in areas downwind from power plants
B. the land damage from extraction
C. that we release carbon back into the carbon cycle, increasing the amount available for plant growth
D. on the ozone layer
E. the increase in greenhouse gases
A. oil palms
B. switchgrass
C. soybean
D. algae
E. poplar trees
A. biomass
B. solar
C. geothermal
D. hydroelectric
E. wind
A. corn
B. wheat
C. soybean
D. potato
E. rice
A. The oil sands trap a heavy, black oil called bitumen.
B. Oil sands mining is more efficient than harvesting conventional sources of oil.
C. Oil sands can be mined and processed to produce a substitute for petroleum.
D. Canada has the world’s largest bitumen reservoir, but much of it is trapped in oil sands.
E. All of the above
A. bitumen
B. coal
C. tar
D. uranium
E. natural gas
A. Sulfur dioxide is not produced.
B. Less hot water is produced than by conventional power plants.
C. Much less CO2 (therefore, fewer greenhouse gases) are released.
D. NOx compounds are not released.
E. Particulates are not released.
A. oxygen-rich; high heat and pressure
B. oxygen-poor; high heat and pressure
C. oxygen-poor; low heat and pressure
D. oxygen-rich; low heat and pressure
E. none of the above describe the appropriate conditions