ENVS 1126/ Exam 3/ snyder/ LSU
The energy in fossil fuels comes from ____ - ANS-The sun
As of 2018 which energy source provides the most of the worlds total energy supply (remember
that total energy includes electricity production, industrial use and transportation)? - ANS-Oil
what are some of the major environmental problems with fossil fuels? - ANS-- health effects on
combustion
-carbon dioxide & methane (climate change)
-Oil extraction (how they are removed from earth)
which of the 3 main fossil fuels has the lowest carbon dioxide emissions per unit of energy
produced? - ANS-Natural gas
imagine your town needs a new power plant. You can build a coal plant, a nuclear plant, or a
natural gas plant. Which one has the greatest NEGATIVE impact on your local air quality? -
ANS-Coal Plant
The deepwater horizon disaster was a - ANS-Largest oil spill ever (gulf of Mexico)
most electricity on earth is generated by - ANS-coal
nuclear reactors use which fuel? - ANS-uranium
what is the role of the moderator in a nuclear reactor? - ANS-pressurized water reactors keep
the boiler water seperate from the reactor, which allows this water to be kept free of radio
activity
in most U.S nuclear reactors, water provides two functions. Which two things does water do? -
ANS--water is either boiled or pressurized to drive conventional turbogenerators
-water is also used as the moderator to slow down neutrons
what are two main factors limiting the use of nuclear energy? - ANS-1. The cost of nuclear
plants
2. Timing, schedule, and construction duration
___________ is a type of renewable energy - ANS-Solar power
what is an advantage of solar power? - ANS-- no fuel cost
-none or low CO2 emissions
-none or low SO2 and NOx emissions
, -does not need to be imported like coal, oil and gas
what is a disadvantage of wind power? - ANS--expensive
-wind and solar are not baseload or "dispatchable"
-limited by geography- some places have it, others don't
-not so good a producing liquid transportation fuels
over the past 150 years, CO2 concentrations in the atmosphere have increased from about
_____ to ______ - ANS-300 PPM to 405 PPM
compared to the average temperature over the 1900-2000 period, global temperatures in 2016
and 2017 were about _____ degrees _____ - ANS-0.8c, higher
Name 4 greenhouse gases - ANS-C02, CH4 (methane), N20 (nitrogen), H20
climate change is mostly caused by _______ - ANS-Human use of fossil fuels
since the passage of the 1990 amendments to the clean air act, the SO2 emissions from power
plants has _________ - ANS-decreased
when was nuclear fission discovered? - ANS-1938 by Otto Han
Natural gas can be used for ______ - ANS-Heating homes, cooking, and industry
_________ is a potential effects of climate change - ANS--sea level rising, precipitation intensity,
arctic sea ice has declined, land ice in Antartica and Greenland has declined
solar power use has seen significant growth over the past 10 years around the world. One
reason is _______ - ANS-Low prices, national policies
Mountaintop removal is associated with _______ - ANS-extraction of fossil fuels
Concentrated solar power uses ______ to produce electricity while photovoltaic panels use
______ - ANS-Generators, photoelectric effect
hydroelectric facilities have both positive and negative environmental impacts. _______ is a
NEGATIVE environmental impact of hydroelectric facilities - ANS-1. seperates populations of
fish,
2. earthquakes
3. displace poeple from flooded reservoir areas
About how many people were killed in the Three mile Island nuclear disaster? - ANS-None
The energy in fossil fuels comes from ____ - ANS-The sun
As of 2018 which energy source provides the most of the worlds total energy supply (remember
that total energy includes electricity production, industrial use and transportation)? - ANS-Oil
what are some of the major environmental problems with fossil fuels? - ANS-- health effects on
combustion
-carbon dioxide & methane (climate change)
-Oil extraction (how they are removed from earth)
which of the 3 main fossil fuels has the lowest carbon dioxide emissions per unit of energy
produced? - ANS-Natural gas
imagine your town needs a new power plant. You can build a coal plant, a nuclear plant, or a
natural gas plant. Which one has the greatest NEGATIVE impact on your local air quality? -
ANS-Coal Plant
The deepwater horizon disaster was a - ANS-Largest oil spill ever (gulf of Mexico)
most electricity on earth is generated by - ANS-coal
nuclear reactors use which fuel? - ANS-uranium
what is the role of the moderator in a nuclear reactor? - ANS-pressurized water reactors keep
the boiler water seperate from the reactor, which allows this water to be kept free of radio
activity
in most U.S nuclear reactors, water provides two functions. Which two things does water do? -
ANS--water is either boiled or pressurized to drive conventional turbogenerators
-water is also used as the moderator to slow down neutrons
what are two main factors limiting the use of nuclear energy? - ANS-1. The cost of nuclear
plants
2. Timing, schedule, and construction duration
___________ is a type of renewable energy - ANS-Solar power
what is an advantage of solar power? - ANS-- no fuel cost
-none or low CO2 emissions
-none or low SO2 and NOx emissions
, -does not need to be imported like coal, oil and gas
what is a disadvantage of wind power? - ANS--expensive
-wind and solar are not baseload or "dispatchable"
-limited by geography- some places have it, others don't
-not so good a producing liquid transportation fuels
over the past 150 years, CO2 concentrations in the atmosphere have increased from about
_____ to ______ - ANS-300 PPM to 405 PPM
compared to the average temperature over the 1900-2000 period, global temperatures in 2016
and 2017 were about _____ degrees _____ - ANS-0.8c, higher
Name 4 greenhouse gases - ANS-C02, CH4 (methane), N20 (nitrogen), H20
climate change is mostly caused by _______ - ANS-Human use of fossil fuels
since the passage of the 1990 amendments to the clean air act, the SO2 emissions from power
plants has _________ - ANS-decreased
when was nuclear fission discovered? - ANS-1938 by Otto Han
Natural gas can be used for ______ - ANS-Heating homes, cooking, and industry
_________ is a potential effects of climate change - ANS--sea level rising, precipitation intensity,
arctic sea ice has declined, land ice in Antartica and Greenland has declined
solar power use has seen significant growth over the past 10 years around the world. One
reason is _______ - ANS-Low prices, national policies
Mountaintop removal is associated with _______ - ANS-extraction of fossil fuels
Concentrated solar power uses ______ to produce electricity while photovoltaic panels use
______ - ANS-Generators, photoelectric effect
hydroelectric facilities have both positive and negative environmental impacts. _______ is a
NEGATIVE environmental impact of hydroelectric facilities - ANS-1. seperates populations of
fish,
2. earthquakes
3. displace poeple from flooded reservoir areas
About how many people were killed in the Three mile Island nuclear disaster? - ANS-None
