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ENVS 1126/ LSU/ EXAM 3 - COMPLETE
STUDY GUIDE / ACTUAL EXAM
QUESTIONS AND CORRECT ANSWERS
(VERIFIED, DETAILED ANSWERS) A
GRADE.
Terms in this set (132) _____________Quiz____________? What is really old-fashioned about nuclear power? -
Answer ✓✓
it's just heating water to rotate a turbine _____________Quiz____________? What is really cutting-edge and innovative about nuclear power? -
Answer ✓✓
It can provide power for extremely long periods of time _____________Quiz____________? What is really scary about nuclear power -
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There is a possibility of a meltdown that harms humans and the environment.
_____________Quiz____________? The concentration of U-235 needed to generate nuclear power is approximately (1), but the concentration of U-235 needed to generate nuclear weapons is approximately (2) -
Answer ✓✓
_____________Quiz____________? What is the difference between carbon-12, carbon-13, and carbon-14? -
Answer ✓✓
Carbon-12 has an atomic mass of 12; carbon-13 has an atomic mass of 13; carbon-14 has an atomic mass of 14. _____________Quiz____________? What is nuclear fission? -
Answer ✓✓
The splitting of an unstable atom into 2 or more stable atoms, often resulting in the release of free neutrons. _____________Quiz____________? Does changing the number of neutrons change the number of protons? -
Answer ✓✓
no
Answer ✓✓
the energy from fission can not be harnessed by humans-- (not true bc nuclear power is the harnessed power of fission) _____________Quiz____________? Chronic obstructive pulmonary disease (COPD) is the fourth leading cause of death in the United States. This disease primarily affects -
Answer ✓✓
the respiratory passageways and alveoli of the lungs _____________Quiz____________? Atmospheric scientists often measure gases in parts per million by weight (ppm). If CO2 is currently 0.04% of the atmosphere, the level expressed in ppm is -
Answer ✓✓
400 ppm _____________Quiz____________? Which one of the following generally increases natural sources of the pollution of the air? -
Answer ✓✓
gases released by a volcanic eruption _____________Quiz____________? How might the 2011 Fukushima have potentially impacted seafood in the United States? -
Answer ✓✓
Organisms in the water could have migrated and entered the food chain in animals that migrate long distances _____________Quiz____________? A nuclear power plant -
Answer ✓✓
Harness the energy produced fission reactions. _____________Quiz____________? What is not a problem that must be taken into account when operating a nuclear power plant?
Answer ✓✓
production of acidic particles _____________Quiz____________? What is nuclear fission -
Answer ✓✓
The splitting of an unstable atom into 2 or more stable atoms, often resulting in the release of free neutrons _____________Quiz____________? Air pollutants most often lead to human health problems of the -
Produces acid pollutants or particulates _____________Quiz____________? This is not an example of a climate proxy found in sediment or ice cores -
Answer ✓✓
tree rings _____________Quiz____________? Where were the sediment core samples collected in the Sediment Cores video? -
Answer ✓✓
coldfoot, ak _____________Quiz____________? Scientists do not use sediment cores to -
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Understand how weather patterns have evolved over time _____________Quiz____________? There were ___ bottles in the sediment traps deployed to collect sediment. -
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_____________Quiz____________?
Which is an example of cultural ecological control for pests affecting plants -
Answer ✓✓
keep grass at least 3 inches high _____________Quiz____________? In the winter in North America, the common cold often shows -
Answer ✓✓
high morbidity, but low mortality _____________Quiz____________? Rachel Carson's scientific credibility was due in major part to her -
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Meticulous documentation of the findings reported in her book _____________Quiz____________? Which is not true about "Silent Spring"? -
Answer ✓✓
Contributed to the movement against genetically engineering crops _____________Quiz____________? Studying environmental biology has got you thinking about what you do with your kitchen wastes, the discarded egg shells, orange and banana peels, coffee grounds, etc. Living at the edge
Answer ✓✓
developed country _____________Quiz____________? The H1N1 swine flu pandemic of 2009-2010 resulted in the immunization of millions of people. When the immunizations were first available, people under 25 or over 65 were given priority. This was done because -
Answer ✓✓
these age groups were most vulnerable to the hazard, putting them at greatest risk _____________Quiz____________? Industrial pollution from this oil refinery best represents a type of -
Answer ✓✓
chemical environmental hazard _____________Quiz____________? Which is not a problem related to chemical pesticides? -
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embrittlement _____________Quiz____________? What book by Rachel Carson, published in 1962, first alerted the general public to the problems posed by pesticides -
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silent spring _____________Quiz____________? Which of the following is a good example of a cultural hazard to public health? -
Answer ✓✓
Eating a high-sugar diet and engaging in little exercise, a man increasingly becomes obese _____________Quiz____________? Which one of the following is NOT a problem associated with chemical pesticides? -
Answer ✓✓
it reduces crop yields and leads to decreased fruit sizes _____________Quiz____________? Which one of the following best illustrates a nonpoint source of pollution? -
Answer ✓✓
storm-water drainage from the parking lot around a football stadium _____________Quiz____________? Which of the following holds the highest levels of oxygen? -
Answer ✓✓
cold flowing water in a stream in Ontario in April
of the other fish are dead. The water also smells very bad. Which one of the following is the most likely explanation for the death of these fish? -
Answer ✓✓
bacteria feeding on the large volume of carp feces depleted the oxygen _____________Quiz____________? Dams: -
Answer ✓✓
Impede or prevent migration of fish _____________Quiz____________? A small neighborhood pond averaging about 3 meters in depth reveals all the signs of cultural eutrophication, most likely from runoff of lawn fertilizers used by the residents. The water is very cloudy and oxygen levels remain very low, resulting in few fish that can survive. To provide some opportunities for the neighborhood kids to regularly catch fish, the neighborhood association decides to purchase, install, and run a large water fountain in the middle of the pond. How could this water fountain help address the eutrophication of this pond? The water fountain will -
Answer ✓✓
Increase the oxygen levels of the pond _____________Quiz____________?
During a spring flood, a small lake receives a large influx of nutrients. We would expect that in this lake, the growth of phytoplankton will -
Answer ✓✓
increase and the growth of submerged aquatic vegetation will decrease _____________Quiz____________? Which one of the following is NOT considered a renewable resource? -
Answer ✓✓
Coal _____________Quiz____________? In the regions of the dead zone in the Gulf of Mexico just west of the Mississippi River delta, oxygen levels are -
Answer ✓✓
highest at the ocean surface, away from oxygen depleting bacteria. _____________Quiz____________? Good health in the modern world, with few cases of bacterial infection, is largely the result of -
Answer ✓✓
clean water supplies and proper treatment of sewage _____________Quiz____________? Which is not true about solar energy? -
_____________Quiz____________? Which is not an energy source to develop a low carbon future? -
Answer ✓✓
natural gas _____________Quiz____________? People with home septic systems often flush several cups of a powdered substance down their toilets every month or two to keep their systems healthy. These powdered substances most likely contain -
Answer ✓✓
bacteria and enzymes that help break down wastes. _____________Quiz____________? Which one of the following is the cultural hazard that causes the most deaths per year -
Answer ✓✓
smoking _____________Quiz____________? LD50 is -
Answer ✓✓
the dose that it takes to kill half of a population
_____________Quiz____________? There are 4 types of environmental hazards. A carcinogen is an example of ______ environmental hazard -
Answer ✓✓
chemical _____________Quiz____________? Some people in certain African countries are resistant to (1)___ because they have a (2)___ that makes their red blood cells form a sickle shape, and this makes the red blood cells difficult for (3)___ to invade. -
Answer ✓✓
(1) malaria, (2) mutation, (3) the plasmodium parasite _____________Quiz____________? Uh-oh! Somehow millions of tiny birth control pills have spilled into Baton Rouge's drinking water. You do the calculations and realize that the water you drank with your triple cheeseburger for lunch at noon exposed your body to 760 mg of estrogen. You google and find out that estrogen has a half life of 8 hours and makes breasts grow rapidly, regardless of gender. You further read that estrogen will only cause your breasts to grow if you have more than 100 mg in your body after a 24 hour time limit. You do the math. What comes next? -
Answer ✓✓
Whew! You dodged a bullet this time, as there will only be 95 mg of estrogen in your body at the 24 hour mark. Although, you do wonder if there are any long-term effects...
_____________Quiz____________? ou are trying to wean yourself off the drug BCD because you want to get a job at the Peters, Bryce, and Johnson law firm (PB&J) and they frown on BCD use. You lost a lot of weight last year and are down to 200 pounds. Your drug test at PB&J is Monday morning at 8:00 AM, and you know that the drug test has a lower limit of detection of 12.5 mg of BCD per 100 pounds body weight and that BCD has a half life of at most 8 hours. The last time you took BCD was Friday afternoon at 4:00 PM, and it was a dose of 6 grams of BCD. (1) How much BCD remained in your system by 8:00 AM Monday morning? (2) Will you fulfill your dream of working at PB&J? -
Answer ✓✓
(1) 23.4 mg, (2) Yes hooray, your career is about to take off! _____________Quiz____________? Which one of the following is a leading cause of mortality in developing countries? -
Answer ✓✓
communicable diseases _____________Quiz____________? You are trying to wean yourself off Sudafed because you got a job as the Head Jelly Donut Filler at Krispy Kreme and they frown on Sudafed use. You have lost a lot of weight and are down to 100 pounds. Your drug test is Monday morning at 8:00 AM, and you know that the drug test has a lower limit of detection of 10 mg of Sudafed per 100 pounds and that Sudafed has a half
life of at most 12 hours. The last time you took Sudafed was Friday night at 8:00 PM, and it was a dose of 0.48 grams of Sudafed. How much Sudafed was in your system by 8:00 AM Monday morning, and will you fulfill your lifelong dream as the Head Jelly Donut Filler at Krispy Kreme?
Answer ✓✓
Bad news, you will not get the job because by Monday morning you will have 15 mg of Sudafed in your system. You will have to go back to working at Dunkin Donuts, which is your backup plan _____________Quiz____________? Malaria is an example of a biological hazard. In malaria, the relation Mosquito:Human:Plasmodium is equivalent to -
Answer ✓✓
vector: host: parasite _____________Quiz____________? Of the 4,000+ compounds in a cigarette at least ___ are carcinogenic. -
Answer ✓✓
_____________Quiz____________? There are ____ pairs of chromosomes in a human cell -
Answer ✓✓
