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BBE 1002/EEB 484 Exam 3 study guide
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BBE 1002/EEB 484 Exam 3 study guide
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BBE 1002/EEB 484 Exam 3 study guideFrom the textbook. Why did the author suggest California is in a state of denial? - ANS
Because they import much of what they consume but at the same time they have abundant
resources of their own.
Figure 2 showed the % consumption of different resources for the developed nations. It showed
that in the year 2010 these countries consumed about __________% of the global petroleum
consumption. - ANS 50%
Globally we consume about 12 tons per person per year but this is slightly misleading as some
countries consume much more than others. How much more do high income countries consume
than low income countries? - ANS About 10 times more.
Assume the Proven Reserves of mineral XYZ are 40 tons and the consumption rate of mineral
XYZ is 2 tons per year. What is the R/P ratio - ANS 20 years
What was the current R/P ratio for crude oil in 2010? - ANS About 43 years
On average, each person in the US consumes about ________ lbs of mineral resources per
year. - ANS 26,000
Which best describes the concept "it takes resources to extract resources"? - ANS It takes
water and fossil fuels to extract minerals or fossil fuels
When people talk about "ore" what are they referring to? If you don't know, you may need to
google it. - ANS a naturally occurring solid material from which a metal or valuable mineral
can be profitably extracted.
What example was used to explain the concept 'it takes more resources to extract more
resources"? - ANS mountaintop coal mining.
Which of the following reasons were given for why countries import resources. - ANS
-cheaper because of cheap labor
- no local supply
-cheaper because of relaxed environmental regulations
life cycle - ANS -Mining of iron ore;extraction
-Making steel from iron ore;production
-recycling a car;end of life
-driving a car;use
-building a car-production
,What was one of the reasons, cited in the text, that there was spike in oil prices in the 1970's? -
ANS US oil production slowed.
The taconite in the Mesabi formation contains about ___% iron - ANS 30%
In Chapter 7 they cited a study that looked at the recycling rates of 60 different metals. They
found that the recycling rate for over half of them was - ANS less than 1%
recycling rate - ANS Common metals like copper, steel, aluminum have recycling rates of
50%.
In the NASA video showing carbon dioxide concentrations in the atmosphere (A Year in the Life
of Earth's CO2) what season showed the highest concentration of carbon dioxide in the northern
hemisphere? - ANS Winter
How much is a metric ton? - ANS 1000 kilograms
Plants take carbon dioxide out of the atmosphere because of photosynthesis. Living plants also
put carbon dioxide back in the atmosphere through a process called _____________. - ANS
respiration
The carbon cycle is drawn out in Figure 1. How much carbon is being emitted from human
activity? - ANS 9 billion metric tons
If you watch the animation called "pump handle" it tracks CO2 concentrations back 800,000
years. In the animation, pre industrial concentrations were about ___________ - ANS 280
ppm
The cool graphic on carbon dioxide concentrations over time (since like 800,000 BCE showed
some interesting things. What was the approximate concentration of CO2 in the atmosphere in
1979? - ANS 330 ppm
In the NASA video showing carbon dioxide concentrations in the atmosphere (A Year in the Life
of Earth's CO2) the red colors in the northern hemisphere start to fade (concentrations are
reduced) because of ____________. - ANS plant uptake of carbon dioxide
If more energy enters the earth's atmosphere than leaves, the planet begins to heat. How much
extra energy is now being absorbed by the earth? - ANS 0.8 W/m2
The earth gets all its energy from the sun. What are the two things that influence the energy we
receive from the sun? - ANS Energy output from the sun
-Distance from sun to earth
, Tim and Kim talked about how data-intensive and complex the LCA process is. What did they
mention that can be done to deal with all this information, streamline the process, and address
the most impactful areas? - ANS Focus on only the biggest contributors to the
environmental impacts (hot-spotting).
According to the lecture an LCA provides - ANS information to assesss the environmental
impact of a product or service
The video discussed a "Process Map" for an LCA. Match the order of the stages of a process
map for any product for an LCA.
(A "Process Map" is a way to organize an analysis of a product by evaluating impacts for each
phase of a product.) - ANS stage 1;material extraction
stage 2;manufacturing of the product
stage 3;packaging and transport distribution
stage 4; Use
Stage 5; End of life
LCA - ANS Functional unit refers to the product being used.
Inventory Analysis refers to documenting all of the processes and products in a functional unit.
System boundary indicates where the LCA begins and ends in terms of scopes. (Gate to Gate
or Cradle to Grave)
The LCA Briefing mentions that LCA is an internationally standardized process. The
organization that developed the standards is called the International Standards Organization
(ISO) - appropriate name I think... What is the official ISO standard number? - ANS ISO
14040
Products made from biorenewable resources are ALWAYS more environmentally friendly than
non-renewable resources. - ANS We don't know that answer yet, but I am thinking some
might be more environmentally friendly and others may not. Also, what do you mean
"environmentally friendly" Are you talking climate change or water quality or something else?
Corn is primarily used for animal feed but as you will see is used for ethanol production. What
other bioproducts come from corn? - ANS cleaners,adhesives,solvents
About ____% of the renewable energy we consume in the US is from biomass. - ANS 45
What is the best definition of a carbohydrate economy? - ANS An economy that uses
primarily plants and vegetables for most of the products produced.
biomass - ANS Biomass is a generic term for biorenewable resources.
biorenewable resources - ANS Tree,corn,algae
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