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BIOL 101
Exam 5
Print your first and last name in space provided on the scantron and on the last page of this exam.
Each question is worth 2 pts. This section is worth a total of 40 pts.
1. Which of the following greenhouse gas has 23 times more heat trapping ability than carbon dioxide?
a. Methane (CH4)
b. HFC- 23
c. Water Vapor (H2O)
d. Ozone (O3)
e. Nitrous Oxide (N2O)
2. What is happening to the oceans due to global climate change?
a. They are becoming more acidic
b. They are becoming more alkaline
c. they are getting more salty
d. oxygen levels are increasing
e. all of the above are occurring
3. Electrolysis is used to
a. split water into hydrogen and oxygen
b. increase the efficiency of wind turbines
c. decrease emissions from biomass energy
d. convert sunlight into electricity in a PV cell
e. generate energy from wave motion
4. As a result of glacial melt what else is happening?
a. Oceans are getting saltier
b. The thermohaline currents are speeding up
c. We are experiencing more and more El Nino events
d. The albedo is decreasing causing the glacial areas to absorb more heat and melt even faster
e. More drinking water is available to the millions of people who rely on mountain meltwater
5. Which of the following would be considered a proxy indicator?
a. Ice core measurements
b. Direct Atmospheric measurements
c. Predictions by the IPCC
d. Modeling
e. All of the above are types of proxy indicators
6. As revealed through ice cores, atmospheric concentrations of both________ and _________, are seen to rise
and fall in tight correlation with temperature:
a. Carbon dioxide and HFC-23
b. Carbon dioxide and methane
c. Carbon dioxide and nitrous oxide
d. Carbon dioxide and ozone
e. Nitrous Oxide and methane
7. In the United States what are the two major sources of greenhouse gas emissions?
a. Commercial manufacturing and residential heating/cooling
b. Agriculture and manufacturing
c. Industry and residential construction
d. Irrigation and Mining/drilling
e. Transportation and electricity generation
8. The effects of climate change are most dramatic:
a. At the equator
b. In the temperate zones
c. In the Arctic
d. in Europe
e. All of these areas are showing similar effects due to climate change
9. Newer scientific models have demonstrated that CO2 levels must be held at or below _________ ppm, and we
are currently ________ that level today:
a. 550 ppm, below
b. 450 ppm, above
c. 350 ppm, above
d. 300 ppm, at
e. 250, above
Questions 10-13 Use the following answers below to match to the numbered question. Note: You will not use one of
these answers.
a. solar flares
b. Milankovitch cycles
e. El-Nino-Southern Oscillation (ENSO)
c. aerosols
d. thermohaline ocean circulation
10. can result warming or cooling depending on what type is released in the atmosphere
11. responsible for keeping Europe warmer than it would be, could potentially be altered by climate change
causing Europe to cool rapidly
12. a shift in atmospheric pressure, sea surface temperatures and ocean circulation in the tropical Pacific Ocean
which causes the Pacific Northwest to be wetter than normal like this winter
13. periodic changes in the Earth’s rotation which can trigger long term variation in Earth’s climate
14. What do climate scientists conclude about hurricane activity and climate change?
a. There will be more hurricanes as a result but they will be low intensity
b. There will be less hurricanes as a result but they will be more intense
c. Hurricanes will be more intense and last longer
d. Hurricane intensity will decrease and they will be shorter
e. There are no published studies that link hurricane frequency or intensity to climate change.
15. What is the most abundant greenhouse gas in our atmosphere?
a. methane
b. carbon dioxide
c. nitrous oxide
d. water vapor
e. ozone
16. Which greenhouse gas traps the most heat per molecule?
a. carbon dioxide
b. water vapor
c. nitrous oxide
d. HFC-23 (a hydrochlorofluorocarbon)
e. methane
17. Scientists agree that the increase in greenhouse gases in the atmosphere comes primarily through what activity?
a. agriculture
b. converting land to impervious surfaces
c. draining wetlands
d. cutting trees (deforestation)
e. burning fossil fuels
18. Which of the following is NOT a drawback associated with the use of biomass energy?
a. Combustion of biomass energy produces carbon dioxide, which contributes to global warming
b. Producing ethanol from corn yields only small amounts of energy as ethanol when the energy used to grow
and process it is subtracted out
c. Unsustainable wood harvesting can lead to deforestation, soil erosion, and desertification.
d. Because they burn less cleanly than gasoline or diesel, ethanol and biodiesel contribute more to air
pollution.
e. Growing crops for energy establishes monoculture agriculture on land that could otherwise be left fallow or
used to grow food.
19. What is the most practical way that each of us can contribute to reducing the amount of global greenhouse gases
emitted into the atmosphere?
a. Each household should invest in residential solar energy
b. Support legislation to build more nuclear reactors in the United States
c. Conserve energy
d. Switch from oil to ethanol to run our cars
e. We can all buy carbon offsets
20. One of the lessons we have learned from studying the IPCC reports is that:
a. global climate change is not occurring but is certain to occur in next decade if we don’t act soon
b. global climate change is happening now and it cannot be stopped only slowed down
c. There is some likelihood that humans are the reason for global climate change
d. Carbon offsets are better than cap and trade for reducing impacts of climate change
e. The earth experiences natural cycles and we are in a natural warming trend at this time
Name_______________________________________________ BIOL 101 Exam 5
Part II (worth 10 pts total)
Put your answers right on this sheet.
1. The Maldives have erected a wall around their capital and some of the people of Tuvalu are migrating to New
Zealand. Which type of response do these actions represent, mitigation or adaptation? (1 pt)
2. What is one way in which climate change is affecting the oceans’ coral reefs and why is it happening? (2 points)
3. Your friend looks over your shoulder and sees what you are reading in Chapter 14. He/she laughs and says isn’t it
funny you are learning a lie – after all it just snowed last week (1 ½ foot was dumped on his/her area). How will you
respond to this in a scientific manner? (2 pts.)
4. Why don’t most scientists (including our textbook authors) like to call it Global Warming? What is a more
appropriate term (you can use the one from our text or if you want you can use the one that many climate scientists are
now using). (2 pt)
5. Due to ice-core analysis, we now have information on the gases that were present in the atmosphere dating back
how many years? (1pt)
6. CO2 has a relatively low heat trapping ability. Explain why it is considered to be the main greenhouse gas (that
causes industrial-age climate change) and the one we pay the most attention to. (2 points)
Bonus Points: What is one specific and simple thing you can do to reduce your own carbon footprint? (2 pts)
What is THE SINGLE LARGEST underlying problem making it difficult for us to live sustainably on the earth? (2pts)