ALL OF CHAPTER 13
In order to best achieve energy sustainability, humans must consider which of the following strategies
II and III Improving energy efficiency Developing new energy technologies
Which of the following statements regarding petroleum is correct
II and III It contains natural gas as well as oil. It migrates through pore spaces in rocks.
Currently most high level radioactive waste from nuclear reactors in the US is
Stored at the power plant that produced it
How much less does the Energy Star model cost for that year?
$14.60
Use Table 13-1. If the cost of electricity is $0.10 per kWh and both LCD televisions are used for four hours per day for the period of one year (365 days), how much less does the Energy Star model cost for that year?
$14.60
If a typical home was able to cut its heating costs by 25%, about how much money would it save per year?
$159.50
Use Figure 13-2. If a typical home was able to cut its heating costs by 25%, about how much money would it save per year?
$159.50
which form of energy production has a large envro impact a high cost of construction and the potential to force the displacement of a large number of people and wildlife - water impoundment systems -photovoltaic systems -wind farms -tidal power generating stations -geothermal power stations
- water impoundment systems
if 100 W incandescent light bulb uses 360 kJ of energy per hour, and a compact fluorescent bulb uses 1/4 as much, how much energy would a compact fluorescent bulb use in 30 minutes -4.5 kJ -9 kJ -45 kJ -90 kJ -900 kJ
-45 kJ
Put the items below in correct sequence for the generation electricity using the wind 1- generator converts mechanical energy into electrical energy 2- wind turns turns the wind turbine blade 3- the gear box transfers mechanical energy to the generator 4- electricity is transferred to the grid
2-3-1-4
Use Figure 13-4. If the trend from 2006 to 2007 continued, approximately how many kWh would have been generated in 2008?
42 x 10^9
100 watt bulb...
45 Kj
If a 100 W incandescent light bulb uses 360 kJ of energy per hour, and a compact fluorescent bulb uses mc004-1.jpg as much, how much energy would a compact fluorescent bulb use in 30 minutes? 90 kJ 9 kJ 4.5 kJ 900 kJ 45 kJ
45 kJ
Use Figure 13-3. What is the best estimate of the highest amount of solar radiation available in the U.S.?
7 kWh/m2/day
Use Figure 13-2. What is the best estimate of the highest amount of solar radiation available in the United States? 15.5 kWh/m2/day 7 kWh/m2/day 4.5 kWh/m2/day 10 kWh/m2/day 2.5 kWh/m2/day
7 kWh/m^2/day
which of the following is a carbon based renewable energy resource 1) coal 2) charcoal 3) solar
2
put items in order
2 3 1 4
Use Table 13-1. If a community has 200,000 homes and 1% of those homes have Plasma televisions, how many kWh of excess energy are being consumed every year (365 days) than if those homes had Energy Star LCD televisions instead?
818,000 kWh
LED bulbs are 6 times as efficient as incandescent. If a household replace ten 100-watt bulbs with LED bulbs, how many watts would be saved?
833
LED bulbs are six times as efficient as incandescent bulbs. If a household replaced ten 100-watt bulbs with LED bulbs, how many watts would be saved?
833 watts
LED bulbs are six times as efficient as incandescent bulbs. If a household replaced ten 100-watt bulbs with LED bulbs, how many watts would be saved?
833 watts
LED bulbs are six times...
833 watts
Use Figure 13-1. What percent of the U.S. energy is provided by nonrenewable energy sources? 84 percent 7 percent 93 percent 60 percent 99 percent
93 percent
. Use Figure 13-1. By looking at the chart above, what percent of the US energy needs are served by nonrenewable energy sources?
93%
What percent of the u.s. energy needs are served by nonrenewable energy sources?
93%
Which is an environmentally sound way to maximize our energy resources? I. Increasing energy efficiency II. Increasing energy conservation III. Using fewer renewables III only I and II II and III I only I, II, and III
I and II
The environmental impacts if cutting down a forest and burning the wood for heating and cooking could include
I and II deforestation and subsequent soil erosion release of particulate matter into the air
Which of the following are sun-driven energy types?
I and II types
Renewable energy can be best described as
Those that are, or can be, perpetually available
Which of the following is not solar-based
Tides
Which of the following is most fuel efficient
Train
Governments can encourage energy conservation by
Raising taxes, Offering tax credits for replacing old appliances with new ones, Investing in smart grid technology
Which of the following would NOT be a method for saving substantial amounts of energy?
Replacing fluorescent bulbs with incandescent bulbs in buildings
Which of the following would not be a method for saving substantial amounts of energy?
Replacing fluorescent bulbs with incandescent bulbs in buildings
Which is a problem associated with the use of trees for biomass? I. Potential deforestation II. Burning fossil carbon III. Potential soil erosion II only I, II, and III I only I and III I and II
I and III
Which demonstrates passive solar energy
I and III A south-facing room with stone walls and floors A solar oven
Governments can encourage energy conservation by I. raising taxes on fossil fuel use. II. offering tax credits to replace old appliances with new energy-efficient appliances. III. investing in smart grid technology. II only I, II, and III I only II and III I and III
I, II, and III
Governments can encourage energy conversation by
I, II, and III
Carbon neutrality refers to I. using renewable sources of energy. II. an activity that does not change atmospheric CO2 concentrations. III. implementing efficient measures to reduce carbon emissions. I and II I, II, and III I only II only III only
II only
Potential drawbacks to the use of solar energy systems include the need for I. a large power grid. II. a large amount of water. III. toxic metals for production of components. I only II only I and III III only I, II, and III
III only
Which of the following would NOT be classified as biomass
Uranium
Which of the following would not be classified as biomass?
Uranium
Nuclear power plants produce electricity using energy from radioactive decay of
Uranium 235
Use Figure 13-2. Which of the following increases in efficiency would save a typical household the most money?
Use 25% less energy for lighting
Which of the following increases in efficiency would save a typical household the most money?
Use 25% less energy for lighting
In 1969 M King Hubbert published Hubbert's curve the graph shows
The point at which world oil production will reach max and the point at which we run out of oil
The fact that global transfer of energy from a fuel to electricity is about 35 percent efficient is mostly consequences of
The second law of thermodynamics
One of the biggest limitations to the wide scale use of geothermal is the need for
a suitable site
one of the biggest limitations to the wide scale use of geothermal energy is the need for
a suitable site
benefit of flex fuel vehicles
ability to run on gasoline and e-85
Because it utilizes the least amount of energy to produce the greatest yield per hectare of land per quantity of fuel, ____ is the most sustainable choice for biodiesel production.
algae
Which source for biodiesel production utilizes the least amount of energy to produce the greatest yield of fuel per hectare of land? Sugar cane Soybeans Algae Corn Switchgrass
algae
____ is the most sustainable choice for biodiesel production
algae
most sustainible choice for biodiesel producion
algae
All of the following are benefits of green roofs except
all of the above are beneficial
An important aspect of utility companies is reducing peak demand events. This is best accomplished by
allowing customers to pay lower prices for energy when peak demand is low
4 consequences of building hydroelectric dams
change water temp, increase risk of predation, decrease oxygen content, decrease water flow
carbon-based renewable energy resource
charcoal
leading producer of hydroelectricity
china
an energy efficent home, in the northern hemisphere, using a passive solary energy design for heating and cooling would include
light colored roofing material, double-paned windows, a roof with an overhang, flooring material with heat absorbing qualities
tidal power can only be generated in
locations w/ a large difference between high and low tides
south facing windows are an example of
passive solar design
key component of sustainible design for a single family house
passive solar energy
three problems associated with the use of trees for biomass
potential deforestation, potential soil erosion
energy resources that can be regenerated rapidly, such as biomass sources, are considered to be...
potentially renewable
governments can encourage energy conservation
raising taxes on fossil fuel use, offering tax credits for replacing old appliances w/ new ones, investing in smart grid technology
A benefit of geothermal energy over hydroelectric energy when generating electricity is that geothermal energy
does not cause flooding
A benefit of geothermal energy over hydroelectric energy when generating electricity is that the geothermal energy
does not cause flooding
a benefit of geothermal energy over hydroelectric energy when generating electricity is that geothermal energy
doesnt cause flooding
what causes renewable energy use of energy to increas
drop in cost of technolorgy required to use the renewable source
Which is NOT a source of energy that is originally derived from the sun? Wind Active solar Geothermal Biomass Passive solar
geothermal
Why is a ground source heat pump an efficient choice for temperature control? It is an active solar energy technology. It is very inexpensive to install. It uses up to 70 percent less energy than traditional central heating or air conditioning. It requires no energy to run. It uses geothermal energy.
it uses up to 70 percent less energy than traditional central heating or air conditioning
What is the best estimate of the highest amount of solar radiation available in the u.s.
kWh/m2/day
four disadvantages of wind power
kill birds and rates, rely on batteries, noise disurbance, ugly
Which type of energy is utilized to produce tidal power? Solar energy Radiation Heat energy Potential energy Kinetic energy
kinetic energy
what type of energy is utilized to produce tidal power
kinetic energy
benefits of using wind energy over other renewables are
land is able to be used for other purposes, not alter water quality, no pollution or greenhouse fas, none depletable
four methods for saving substantial amounts of energy
replacing fluorescent bulbs with incandescent bulbs in buildings
Over time, a hydroelectric dam might experience a decrease in its electricity generation capacity because sediments build up behind the dam. This phenomenon is known as run-of-the-river. impoundment. deposition. reservoir eradication. siltation.
silation
renewable energy source used least in us
solar
4 forms of biomass
straw, animal poop, charcoal, wood
The benefit of flex-fuel vehicles is
the ability to run on both gasoline and E-85
What is a benefit of flex-fuel vehicles? Increased gas mileage The ability to run on both gasoline and E-85 Lower cost fuel Use of arable land to grow ethanol sources Smaller net CO2 emissions
the ability to run on both gasoline and E-85
What is a benefit of flex-fuel vehicles? Smaller net CO2 emissions The ability to run on both gasoline and E-85 Use of arable land to grow ethanol sources Increased gas mileage Lower cost fuel
the ability to run on both gasoline and E-85
Use Figure 13-3. The region of the US that has the highest solar radiation per day is
the desert southwest
the fastest growing renewable source for generating electricity
wind
what are sun driven energy types
wind power and biodiesel
Which is NOT a benefit of using wind energy over other renewables? Wind is a nondepletable resource. Wind turbines pose a threat to local wildlife. Use of wind energy does not release greenhouse gases. The land used by a wind farm can also be used for other purposes. Wind farms do not alter water quality.
wind turbines pose a threat to local wildlife
All of the following are benefits of "Green roofs" EXCEPT
All of the above are beneficial
LED bulbs are six times as efficient as incandescent bulbs. If a household replaced ten 100- watt bulbs with LED bulbs, how many watts would be saved -175 watts -400 watts -600 watts -833 watts -1700 watts
-833 watts
200,00 homes
818,000 kWh
South-facing windows are an example of
Passive solar design
using heat from radioactive decay within the earth...
geothermal energy
The region of the u.s. that has the highest solar radiation per day is
the desert southwest
the largest dam in the world, ___ can generate almost 85,000,000,000 kWh of electricity per year -Us hoover dam -China's three gorges dam -Brazil's and Paraguay's Itaipu dam -England's Cragside dam -Venezuela's Guri dam
-China's three gorges dam
which country's percentage of electricity from wind power is the highest -Brazil -Russia -US -Denmark -India
-Denmark
an important aspect of utility companies is reducing peak demand events. This is best accomplished by -building power plants with larger generating capacity -implementing rolling black outs -keeping an ample supply coal on hand -allowing customers to pay lower prices for energy when peak demand is low -using renewable sources to generate peak electricity needs
-allowing customers to pay lower prices for energy when peak demand is low
Half-life of 40 years. How many years will it take for the radioactivity level of .25
16
the amount of electricity generated using renewable energy sources in the future will continue to rise. which of the following will likely cause this increase to happen the fastest -a drop in the cost of techno required to use the renewable energy source -more widespread global incorporation of the renewable energy sources -more education to consumers on the enviro benefits of the renewable resource -international treaties on greenhouse gas emmissions -converting infrastructure to accommodate the renewabless
-a drop in the cost of techno required to use the renewable energy source
all of the following are benefits of "Green roofs" except -a green roof serves as insulation for the structure -a green roof has a cooling effect on the structure and its surroundings - a green roof improves the overall air quality of the surroundings -all of the above are beneficial -none are benefits
-a green roof serves as insulation for the structure
the benefit of flex-fuel vehicles is -increased gas mileage -burning of only fossil carbon -smaller net co2 emissions -ability to run on both gasoline and E-85 -stabilized food prices
-ability to run on both gasoline and E-85
because it utilizes the least amount of energy to produce the greatest yield per hectare of land per quantity of fuel, ___ is the most sustainable choice for biodiesel production -algae -switchgrass -corn -soybeans -sugar cane
-algae
a ground source heat pump is efficient due to -it circulating water through a loop located underground using diff. in the temps. to heat the water in the loop and thereby heat the structure -it using up to 70% less energy than traditional central heating or air conditioning -its versatility in tht it can be constructed anywhere in the world -all -none
-all
Us only approx. 7% of the energy use if from renewable energy sources. Which of the following is the largest component of that 7% -wind energy -biomass -hydroelectric -solar energy -nuclear
-biomass
nondepletable energy resources include all of the following except -wind -biomass -solar -geothermal -hydroelectric
-biomass
what form of energy production can potentially compete with food resources for a community -geothermal energy -solar energy -tidal power -hydroelectric power -biomass
-biomass
which country is the worlds leading producer of hydroelectricity -china -Brazil -united states -France -south africa
-china
a benefit of geothermal energy over hydroelectric energy when generating electricity is tht geothermal energy -doesn't cause flooding -is available in any location -requires a specific locale -doesn't require any water -never releases dangerous gases
-doesn't cause flooding
after wind turbines are installed what is the only fossil fuel input required for them to generate electricity -natural gas to keep the blades from freezing -fuel to travel to the turbine to maintain the equipment -coal to start the turbine spinning -oil to turn the turbine when there is little wind -no fossil fuel input is ever required after a turbine is installed
-fuel to travel to the turbine to maintain the equipment
using heat from radioactive decay deep within earth to heat water to spin turbines is an ex of -tidal power -geothermal energy -biomass -hydroelectric power -solar energy
-geothermal energy
all of the following are environmental costs of water impoundment systems except -water behind dams can hold more heat and therefore less oxygen -lack of valuable sediments in the water downstream from dams -methane emissions after flooding the are in order to build the dam -flooding of the habitats behind the dam -hydroelectric power generation creates a lot of co2 emissions
-hydroelectric power generation creates a lot of co2 emissions
the country of Iceland is a model for switching from nonrenewable to renewable energy sources. the three renewable sources most used by the people of Iceland are -hydroelectric, geothermal, and hydrogen -geothermal, hydroelectric, and natural gas -geothermal, wind, and hydrogen -geothermal, tidal, and hydrogen -hydroelectric, wind, and hydrogen
-hydroelectric, geothermal, and hydrogen
a fuel cell works by combining___ and __ to produce water and electricity -carbon, oxygen -gasoline, ethanol -hydrogen, oxygen -carbon, hydrogen -carbon dioxide, water
-hydrogen, oxygen
fish ladders help to mitigate the enviro problems caused by -tidal power water -impoundment systems -run of the river systems -photovoltaic cells -hydrogen fuel cells
-impoundment systems
tidal power can only be generated -during the day -in locations with high radioactivity -in locations with a large diff. btn high and low tides -if there is a techno breakthrough -when the moon is directly overhead
-in locations with a large diff. btn high and low tides
which of the following tends to be problematic for run-of-the-river generation stations -intermittent electricity generation -seasonal changes in river flow -high environmental costs -silting of the reservoirs -high flow rates
-intermittent electricity generation
Which of the following is the correct type of energy utilized to produce tidal power -radiation -kinetic energy -solar energy -potential energy -heat energy
-kinetic energy
which of the following is not a disadvantage of wind power -wind turbines can kill birds and bats -wind turbines rely on batteries which are expensive to produce and diff. to dispose of -some people are disturbed by the noise of the turbines -land used for wind power cannot be used for any other purpose -some people find the turbines aesthetically displeasing
-land used for wind power cannot be used for any other purpose
an energy efficient home in the northern hemisphere using a passive solar energy design for heating and cooling would include all of the following except -windows along the west facing wall -light-colored roofing material -double-paned windows -a roof with an overhang -flooring material with heat absorbing qualities
-light-colored roofing material
an electric company's tiered rate system charges customers -increasingly higher rates for less renewable resources -diff. rates based on the square footage of their dwelling -lower rates for first increments of energy and higher rates as the usage goes up -diff. rates based on high peak events -increasingly high rates for renewable resources
-lower rates for first increments of energy and higher rates as the usage goes up
the main advantage of nondeplatable energy sources over nonrenewable energy source is -nondepletable energy sources will not run out on human time scales -electricity generated by nondeplatable energy sources is consistently lower in price -nondeplatable energy is ubiquitously available whereas fossil fuels are not -nondeplatable energy sources are not dangerous to the enviro. and nonrenewable energy sources are -nondeplatable energy sources do not contribute to greenhouse gas emissions and fossil fuels do
-nondepletable energy sources will not run out on human time scales
South faced windows are an ex of -passive solar design -active solar heating -geothermal design -thermal inertia -wind power
-passive solar design
what is a key component of sustainable design for a single-family house -hydroelectric power -biomass -passive solar energy -tidal energy -geothermal energy
-passive solar energy
energy resources that can be regenerated rapidly, such as biomass energy sources are considered to be -perpetual -nonrenewable -nondepletable -fossil fuels -potentially renewable
-potentially renewable
which of the following would not be a method for saving substantial amounts of energy -purchasing energy start electronics and appliances -using public transportation instead of private vehicles -replacing fluorescent bulbs with incandescent bulbs in buildings -applying sustainable design principles to new construction -charging electricity customers according to a tiered rate system
-replacing fluorescent bulbs with incandescent bulbs in buildings
smart-grid techno is needed in the Us for all of the following reasons except -some locations have the capacity to generate more electricity than is needed -some locations cannot supply the capacity of electricity needed and build new power plants -peak demands stress some locales causing rolling brown outs -using wide-scale intermittent sources such as wind and solar power can lead to instability -smart grid techno is necessary for generating hydroelectric energy
-smart grid techno is necessary for generating hydroelectric energy
one of the biggest limitations in the wide scale use of geothermal energy is the need for -large amounts of water -suitable site -area with warm water temps. -cooling system -large amount of land
-suitable site
which of the following sources of biofuel cannot currently be used at a large scale because of its high cellulose content -corn -soybeans -sugar cane -switchgrass -algae
-switchgrass
disadvantages of the use of hydrogen as fuel include all of the following except -difficulty of obtaining free hydrogen gas -large size of fuel tanks needed to store hydrogen gas -dangerous nature of hydrogen gas in vehicles -lack of an infrastructure to transport hydrogen gas -the scarcity of water in which electrolysis can be conducted
-the scarcity of water in which electrolysis can be conducted
which of the following would not be classified as biomass -straw -animal dung -charcoal -uranium -wood
-uranium
all of the following are ways to conserve energy except -using a desktop computer as opposed to a laptop -consolidating errands while in you car -replacing incandescent bulbs with compact fluorescent bulbs -using a power strip for electronics -lowering thermostats during cold months
-using a desktop computer as opposed to a laptop
on a world wide basis the fastest growing renewable source for generating electricity is -geothermal -hydroelectric -solar -biomass -wind
-wind
benefits of using wind energy over other renewables are all of the following except -land used by wind farm is able to be used for other purposes -wind farms do not alter the water quality of the area -there is no pollution and no greenhouse gases with electricity generation -wind is a nondeplatable resource -wind farms pose a potential threat to local wildlife populations
-wind farms pose a potential threat to local wildlife populations
A coal fired power plant is 33.3 percent efficient in converting the potential energy of coal into electricity. A nearby household receives 100 percent of its electricity from the coal fired power plant. After learning about energy conservation, the household reduces its electricity use by 200 kWh of electricity. How many kWh of the potential energy from coal would be conserved? 200 kWh 100 kWh 300 kWh 400 kWh 600 kWh
...
potential drawbacks to the use of solar energy systems include the need for 1) a large power grid 2) a large amount of water 3) toxic materials for production of components
1, 2, 3
Environmentally sound ways to maximize our energy resources include 1) increasing energy efficiency 2) increasing energy conservation 3) using fewer renewables
1,2
which of the following are sun driven energy types 1) wind power 2) biodiesel 3) geothermal
1,2
govts. can encourage energy conservation by 1) raising taxes on fossil fuel use 2) offering tax credits for replacing old appliances with new ones 3) investing in smart grid technology
1,2,3
Problems associated with the use of trees for biomass are 1) potential deforestation 2) burning fossil carbon 3) potential soil erosion
1,3
42 watt bulb
115
Use Table 13-1. If both LCD televisions are on for 4 hours per day for one month (30 days) how much less energy does the Energy Star television use during that time? 400 kWh 12 kWh 120 kWh 1.2 kWh 100 kWh
12 kWh
Put the items below in correct sequence for the generation of electricity using the wind 1 - generator converts mechanical energy into electrical energy 2 - wind turns the wind turbine blade 3 - the gear box transfers mechanical energy to the generator 4 - electricity is transferred to the grid
2-3-1-4
Put the items below in correct sequence for the generation of electricity using the winder 1- generator converts mechanical energy into electric energy 2- wind turns the wind turbine blade 3- gear box transfers mechanical energy to the generator 4-electricity is transferred to grid DELETE THIS ONE
2-3-1-4
when did it double
2005-2007
Use Table 13-1. If a household watches television 4 hours per day for a year (365 days), how many more kWh will the plasma television use than the Energy Star television? 584 kWh 175 kWh 2453 kWh 409 kWh 262 kWh
409 kWh
how many kWh would have been generated in 2008
42 x 109
If the trend from 2006 to 2007 continued, how many kWh would have been generated in 2008
42 x 10^9
One of the biggest limitations to the wide scale use of geothermal energy is the need for
A suitable site
Because it utilizes the least amount of energy to produce the greatest yield per hectare of land per quantity of fuel, ______ is the most sustainable choice for biodiesel production.
Algae
In the United States, only approximately 7% of the energy use is from renewable energy sources. Which of the following is the largest component of that 7%?
Biomass
Which of the following is the largest component of that 7%?
Biomass
The primary sources of renewable energy in the US are
Biomass and hydroelectricity
An energy efficient building might include all of the following except
Building energy with low thermal inertia
Which country is the world's leading producer of hydroelectricity?
China
The largest dam in the world, ___, can generate almost 85,000,000,000 kWh of electricity per year.
China's 3 Gorges Dam
The largest dam in the world, ____ , can generate almost 85,000,000,000 kWh of electricity per year.
China's Three Gorges Dam
The largest damn in the world, ____ , can generate almost 85,000,000,000 kWh of electricity per year.
China's Three Gorges Dam
Which of the following energy sources is responsible for the largest fraction of electricity in the US
Coal
Which of the following best describes US energy use
Electricity generation is the largest end use of energy in the US
Which if the following statements best describes the sources if energy in US energy consumption patterns
Fossil fuels continue to be the major energy source for all sectors
Using heat from radioactive decay deep within Earth to heat water to spin turbines is an example of
Geothermal energy
Which of the following statements best describes the role if renewable energy in the US
It's largest contribution is to the electricity generation sector.
Which of the following is the correct type of energy utilized to produce tidal power?
Kinetic Energy
Which of the following is the correct type of energy utilized to produce tidal power?
Kinetic energy
Which of the following is not associated with the surface extraction of coal
Land subsidence and collapse
Which of the following statements can be inferred from the data?
Model one is most cost effective
Which of the following is NOT an example of a potentially renewable source
Nuclear energy
Which of the following sources of biofuel cannot currently be used at a large scale because of its high cellulose content?
Switchgrass
Which of the following sources of biofuel cannot currently be used at a large scale because of its high cellulose content?
Switchgrass
The country that generates the most electricity from wind energy is
The United States
Which of the following is a nonrenewable source?
Wind
Which of the following are Sun-driven energy types?
Wind power, Biodiesel
Which of the following would NOT be classified as biomass?
Wood
What form of energy production can potentially reduce food resources? Tidal power Geothermal energy Solar energy Biomass Hydroelectric power
biomass
Which is the largest component of energy generated from renewable sources in the United States? Nuclear Biomass Solar Wind Hydroelectric
biomass
form of energy production can potentially compete with food resources for a community
biomass
largest component of renewable 7%
biomass
More than 80% of the u.s. renewable energy is provided by
biomass and hydroelectric
Use Figure 13-1. More than 80% of U.S. renewable energy is provided by
biomass and hydroelectric energy
a ground source heat pump is efficient due to
circulating water through a loop located underground using the differences in the temperature to heat the water in the loop and thereby heat the structure, it using up to 70% less energy than traditional central heating or air conditioning, its versatility in that it can be constructed anywhere in the world.
list 4 ways to conserve energy
consolidation errands hwile in your car, replacing incandescent bulbs with compact fluorescent bulbs, using a power strip for electronics, lowering thermostats during cold months
Which is NOT a reason that smart-grid technology might be beneficial in the United States? Some locations have the capacity to generate more electricity than is needed. Using intermittent sources such as wind and solar power can lead to instability. Current energy suppliers are located in small, decentralized energy generation parks. Peak demands stress the electricity supply in some locations. Some locations cannot supply the capacity of electricity needed.
current energy suppliers are located in small decentralized energy generation parks
country with highest percentage from wind power
denmark
disadvantages of using hydrogen as a fuel
difficulty of obtaining free hydrogen gas, large size of fuel tanks needed to store hydrogen gas, dangerous nature of hydrogen gas in vehicles, lack of infastructure to transport hydrogen gs
what is the only fossil fuel input required for them to generate electricity after wind turbines are installed
fuel to travel to the turbine to maintain the equipment
To construct a house using sustainable design, the building materials should have a low thermal mass to reduce the need for heating. have a high thermal mass to reduce the need for heating. be a dark color to increase shade. be a light color to increase heat retention. have a low thermal mass to retain heat.
have a high thermal mass to reduce the need for heating
To construct a house using sustainable design, the building materials should have a low thermal mass to retain heat. be a light color to increase heat retention. have a low thermal mass to reduce the need for heating. be a dark color to increase shade. have a high thermal mass to reduce the need for heating.
have a high thermal mass to reduce the need for heating
three iceland
hydroelectric, geothermal, hydrogen
fuel cell works by combining
hydrogen and oxygen
What nation receives over 20 percent of its total electricity use from geothermal energy? Iceland France Russia The United States Denmark
iceland
Tidal power can only be generated
in location with a large difference between high and low tides
13-16
in packet
19-22
in packet
28-33
in packet
39-40
in packet
environmentally sound ways to maximize our energy resources include:
increasing energy efficiency increasing energy conservation
what tends to be problematic for run of the river generation stations
intermittent electricity generation
government agency administers and regulates CAFE standards
national highway traffic safety adminstration
What is a key advantage of nondepletable energy sources over nonrenewable energy sources? Nondepletable energy is easier to use than fossil fuels. Use of nondepletable energy sources has no negative environmental effects. Electricity generated by nondepletable energy sources is consistently lower in price. Nondepletable energy sources will not run out on human time scales. Nondepletable energy sources do not require complex technology to use.
nondepletable energy sources will not run out on human time scales.
advantage of nondepletable over nonrenewable
not run out on human time scales
Which is a disadvantage of concentrating solar thermal (CST) systems? A large plant produces only up to 35 MW of electricity. The material sourcing requires excessive mining for a tracking system. Building is cost prohibitive and economically inefficient. Production becomes more inefficient throughout the day as the temperature increases. They disturb the natural environment by covering a large amount of land with solar reflectors.
they disturb the natural environment by covering a large amount of land with solar reflectors
largest dam in the world
three gorges dam
Which is the largest dam in the world? Hoover Dam, United States Three Gorges Dam, China Itaipu Dam, Brazil and Paraguay Cragside Dam, England Guri Dam, Venezuela
three gorges dam, china
potential drawbacks to the use of solar energy systems include the need for
toxic metals for production of components
Which would NOT be classified as biomass? Straw Uranium Charcoal Animal dung Wood
uranium
Which is NOT a way to conserve energy? Using a desktop computer rather than a laptop Replacing incandescent bulbs with compact fluorescent bulbs Lowering thermostats during cold months Consolidating errands while to make fewer car tips Using a power strip for electronics
using a desktop computer rather than a laptop
Fish ladders help to mitigate the environmental problems caused by hydrogen fuel cells. run-of-the-river systems. water impoundment systems. photovoltaic solar cells. tidal power.
water impoundment systems
fish ladders help to mitigate the environmental problems caused by
water impoundment systems
