ENGR 202 Study Guide - Final Guide: Life-Cycle Assessment, Volatile Organic Compound, Chlorofluorocarbon
FINAL NOTES
Define or describe.
a) Risk: The probability of a specific undesired consequence
b) CFC: Chlorofluorocarbons
c) NOAEL: No Observable Adverse Effects Level
d) F.C: Fecal Coliforms
What are the 3 steps of the Life Cycle Analysis (LCA)?
• Inventory Analysis
• Impact Analysis
• Improvement Analysis
Give 2 reasons why the LCA is not more widely used.
a) Gathering the data is time consuming and expensive. This only gets worse
as the LCA is more comprehensive.
b) There is no universally accepted methodology. The assumptions made
might be subjective.
Name 3 things that can affect the Carbon Cycle.
• Deforestation
• Cement production
• Burning of fossil
fuels
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What are 2 major contaminants of groundwater and their sources?
• Petroleum contaminants from Leaking Underground Storage Tanks (LUST)
• Nitrates, from agricultural fertilizers.
What is bad ozone and its source?
It’s ozone present at the ground level and is the main component of smog. It’s
created by chemical reactions between oxides of nitrogen (NOx) and volatile
organic compounds (VOC) from motor vehicles and industrial facilities in the
presence of sunlight.
What is Eutrophication and what is its cause?
It is the ecosystem response to the addition of nitrates and phosphates (from
fertilizers/sewage) to an aquatic ecosystem. This promotes excessive plant and
algae growth, to the detriment of other forms of aquatic life, leaving a body of
water that is unable to support fish or other life forms and is also unsuitable for
human uses. The cause is runoff from agricultural fields and the dumping of
untreated sewage into bodies of water.
Name 3 things that are affected by Global warming.
• Rise of sea level, and the flooding of low-lying regions.
• Changes in weather patterns (Increased droughts, floods, storms)
• The viability of plant and animal life attempting to cope with rapid changes.
What is Global Warming Potential (GWP)?
It’s a measure devised to compare different emissions in terms of an equivalent
mass of CO2, to determine its contribution to global warming in terms of its
radiative forcing and atmospheric lifetime.
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Document Summary
Define or describe: risk: the probability of a specific undesired consequence, cfc: chlorofluorocarbons, noael: no observable adverse effects level, f. c: fecal coliforms. What are the 3 steps of the life cycle analysis (lca): inventory analysis, impact analysis, improvement analysis. Give 2 reasons why the lca is not more widely used: gathering the data is time consuming and expensive. This only gets worse as the lca is more comprehensive: there is no universally accepted methodology. Name 3 things that can affect the carbon cycle: deforestation, cement production, burning of fossil fuels. What are 2 major contaminants of groundwater and their sources: petroleum contaminants from leaking underground storage tanks (lust, nitrates, from agricultural fertilizers. It"s ozone present at the ground level and is the main component of smog. It"s created by chemical reactions between oxides of nitrogen (nox) and volatile organic compounds (voc) from motor vehicles and industrial facilities in the presence of sunlight.
