Shared Flashcard Set

Details

Notes for Geology
notes b/w test III and final
44
Geology
Undergraduate 1
05/03/2006

Additional Geology Flashcards

 


 

Cards

Term
What is the energy predicament? (2 facts ppl want to ignore.)
Definition
the world is running out of fossil fuels and burning fossil fuels causes global warming
Term
What are the three traditional energy resources? Are they renewable or non-renewable?
Definition
fossil fuels, nuclear fuels, and hydropower; non-renewable
Term
What are the two types of fossil fuels?
Definition
coal and hydrocarbons (oil and natural gas)
Term
What are nuclear fuels?
Definition
the nuclear fission of uranium to produce energy
Term
Describe the process of the formation of oil:
Definition
a. Accumulation of remains of marine microorganisms in oxygen-free sediment: the oil source rock.
b. Maturation of the organic matter to hydrocarbons (needs right temperature and millions of years of time).
c. Migration of the oil to a permeable rock (the oil reservoir) and entrapment in a geological structure (the oil trap).
Term
What is the oil window?
Definition
the exact right temperature where microorganisms can form into oil.
Term
What are the characteristics of of viscous, low-quality crude oil?
Definition
Low temperature, low time
Term
What must happen with oil before it can be pumped out?
Definition
the oil must go from the shale into limestone which has high permeability
Term
Where does the best quality oil in the world come from?
Definition
Libya
Term
The rate at which oil can be extracted is controlled by what factor?
Definition
the permeability of the reservoir rock;If you think of any oil field, the rate at which you pump oil is controlled by the characteristics of the reservoir. It is not determined by how many wells, or how deep you put them.
Term
At the very least it takes ____ million years for oil to form.
Definition
15-25 million
Term
The world may run out of oil by ____, but huge supply problems will occur much sooner.
Definition
2100
Term
Why will huge supply problems occur sooner than the oil actually runs out?
Definition
Hubbert’s peak of oil production;The bomb will explode around 2015. [image]
Term
How is coal formed?
Definition
Coal is formed from the remains of plants rather than marine organisms (cellulose rather than fatty acids).
Term
What is significant about coal in the US?
Definition
The main use for coal in the U.S. is electricity.Domestic coal reserves could last 300 years if coal consumption continues at the present rate, but if coal were asked to supply the entire energy demand of the U.S., it would only take 50 years tp use it all up.
Term
Is it technologically feasible to produce liquid automotive fuels from coal?
Definition
yes, it was done in Nazi Germany, but cars do not go as fast and it causes more pollution than gasoline
Term
Why is synthetic gasoline not considered as a possibility by policy-makers?
Definition
Synthetic gasoline would cost many times more than what we are used to pay for that commodity.
Term
What are tar sands?
Definition
Non-traditional fossil fuels;Oil that has lost most of its volatile components.It cannot be pumped, it must be mined. It produces far less gasoline than regular oil. We will pay more for gasoline. Most tar sands in the world are in Canada.
Term
What are oil shales?
Definition
Non-traditional fossil fuels; Oil source rocks from which oil has not migrated.It cannot be pumped, it must be mined.It will produce far less gasoline than regular oil.We will pay more for gasoline.
Term
What is the fossil fuel conundrum?
Definition
Fossil fuels will run out, no matter what. Even if we can make them last 100-200 years longer (by paying a lot more for gasoline produced by non-conventional methods) we will still have global warming.
Term
Together with overpopulation, what is the most serious and urgent threat to the survival of our civilization?
Definition
global warming
Term
What is the evidence for accelerated global warming?
Definition
A)0.6ºC average increase during the twentieth century.
B)0.3ºC increase since 1970
C)5.5ºC increase in high-latitude continents, from 1965 to 2000.
D)Compare: 3-5ºC increase since ice-age climax.
E) 1998 and 2005 were the two warmest years on record.
F)Accelerated glacial retreat worldwide: Grinnell Glacier (Montana) 1930’s-1990’s (Tropical glaciers are the “coal-mine canaries” of Global warming.)
G) Vanishing Artic ice pack.
Term
What is the correlation between global warming and CO2?
Definition
The Greenhouse Effect. [image]
Term
Describe the correlation between global temperatures and CO2.
Definition
for this you really just have to read through and understand the notes, but the next few cards have a few diagrams that might be helpful:
Term
The carbon cycle
Definition
[image]
Term
Carbon cycle.
Definition
[image]
Term
What are the expected consequences of global warming?
Definition
1) Dramatic rise in worldwide temperatures by 2080.
2)By 2100 global sea level would rise at most one meter (prediction made in 2001);Accelerated warming since then suggest 6 meters by 2100.
3)If all of the Ice in the world melts, sea level would be 80.44 meters. It would probably happen in about 300 years.
Term
What would 1 meter in sea level rise do?
Definition
Wipe out Miami and the Florida Keys.
Term
What would 6 meters do?
Definition
no P.C., Fort Lauderdale, Miami, St. Petersburg, Jacksonville, etc.
Term
If all of the Ice in the world melts???
Definition
GA Coast would be in Macon, no Florida; Mississippi Valley goes all the way to St.Louis; most of South Carolina gone; Holland is gone; Baltic States gone; most of Britain gone
Term
What are the future costs of global warming?
Definition
Flooded cities and farmland;Millions of displaced people;Non-renewable resources locked in sunken cities(Steel in skyscrapers or bridges, copper from water pipes and power lines);Disappearance of island and coastal nations;Drought and exhaustion of ground water in the Great Plains;Agricultural production zones shift northwards;No fertile soils (bare rock from glaciers of the Pleistocene): massive starvations
Term
How are we paying for global warming right now?
Definition
Increasing hurricane strength: As ocean temperature rises, hurricane power also increases.It is the part of the cycle where we expect stronger storms, however, as the temperature of water goes up, the strength and the number of storms also goes up.
Term
The current use pattern of the world is unsustainable in terms of:
Definition
diminishing supply and catastrophic climate change
Term
What are some readily available technologies that can buy humanity precious time for large-scale electricity generation?
Definition
nuclear energy and hydroelectric energy
Term
How much of America's energy is currently generated by nuclear power?
Definition
20%
Term
Name the only two real nuclear accidents to have occured.
Definition
Chernobyl and 3 Mile Island
Term
Which country relies almost solely on nuclear energy, and by how much? How many nuclear accidents have been reported in this country?
Definition
France; 80%; none
Term
Describe briefly how energy is obtained from nuclear fission.
Definition
tart with a highly radioactive atom (Uranium) the splitting produces neutrons and energy. The energy goes in a chain-reaction.Once the nuclear fuel is decayed and cannot produce more heat by undergoing more reactions, you have highly radioactive material. The waste is radioactive for about 10,000-50,000 years.
Term
Is there the possibility of a giant mushroom-cloud atomic explosion with nuclear power plants?
Definition
NO! In Chernobyl, there was a steam explosion that blew off the roof of the reactor room, and no containment dome had been built, so the radiation went out into the atmosphere.
Term
How much waste is created by a nuclear power plant?
Definition
About 100 kg of stuff a year per plant.
Term
What are breather reactors, and what is the problem with using them for nuclear power?
Definition
Breather reactors produce plutonium and produce no waste: the problem is that plutonium is weapons-grade material.
Term
What do we do with high-level waste?
Definition
Dig up a cave and put it in containers of stainless-steel then into big concrete casings. Put these like 400 feet in the ground and wait 20,000 years.
Term
What is the problem with using hydroelectric energy?
Definition
Dams have a finite useful life because of silting-up of reservoirs. Dams destroy ecosystems and modify the local climate. Building dams often requires displacing thousands of people from their land and homes. Building dams in places of unique natural beauty (e.g., the Grand Canyon) is an unacceptable crime against nature.
Term
What are some readily available technologies that can buy humanity precious time for supplementary electricity generation?
Definition
wind power, geothermal energy, and biomass
Supporting users have an ad free experience!