Sci 207 week 4 quiz all correct

SCI207: Dependence of Man on the Environment

SCI 207 week 4 Quiz


Question 1:

As discussed in your text, a study by the Commonwealth Scientific and Industrial Research Organization (CSIRO) concluded what about Australia’s climate?

1.     As atmospheric carbon dioxide emissions have risen, southern Australia has warmed by 1.6 °F since 1950.

2.     Southern Australia has experienced, on average, 15% less rain in the southern region since 1950.

3.     Estimations show that southern Australia will be 4.4°F warmer by 2050 if current trends continue.

4.     If current trends continue, southern Australia will experience diminished rainfall over time.

5.     All of the above statements are true.


 Question 2.                  

The greenhouse effect is caused by the burning of fossil fuels and deforestation.

1.     True

2.     False


 Question 3.        

Which statement is not true regarding hydroelectric power?

1.     Hydropower can play a large part in reducing greenhouse gas emissions since it does not require fuel to generate.

2.     The construction of dams to produce hydropower can be extremely expensive and is often seen as a disadvantage of this energy source.

3.     Hydropower is highly reliable and has been a proven technology over time.

4.     Aside from the high investment costs for the construction of dams, hydroelectric power has no ecological or environmental disadvantages.

5.     All of the above statements are true.


Question 4.

Which statement is true regarding nuclear energy?

1.     Since 2005, global private investments in nuclear energy totaled $100 million dollars.

2.     Nuclear plants cost 2-3 times as much as new windpower to build.

3.     Nuclear energy currently produces 50% of the U.S.’s energy needs.

4.     At least one nuclear reactor is currently online in each of the 50 U.S. states.

5.     None of the above statements are true regarding nuclear energy.


 Question 5.

Which statement is true regarding the cost of climate change adaptation discussed in the text?


1.     The costs of adapting to climate change have been accurately calculated by a variety of governmental organizations.

2.     Based on the uncertainties surrounding climate change, nobody is certain what climate change adaptation costs will be.

3.     Climate change adaptation costs were estimated by the UN Framework Convention on Climate at nearly $3 trillion dollars over a ten year period.

4.     The World Bank estimates climate change adaptation costs between $175 and $200 billion a year by 2030.

5.     All are true statements regarding climate change adaptation.




 Question 6

Net-zero energy refers to a building or installation that produces less energy than it consumes, considered to be energy reliant.

1.     True

2.     False


Question 7.

Which statement is true regarding the policies to promote new renewables discussed in your text?


1.     A fee on carbon emissions would reward renewable, clean energy sources over those that harm the economy and the environment.

2.     Market-based schemes aimed at reducing carbon emissions would give energy companies financial incentives to develop renewable energy sources.

3.     Over 20 states have adopted standards that set minimum requirements for the fraction of energy that must be supplied with renewable sources.

4.     Sweden intends to utilize policies to entirely eliminate their use of fossil fuels.

5.     All of the above statements are true.


Question 8.

Life-cycle cost is the sum of all recurring and one-time (non-recurring) costs over the full life span of a good, service, structure, or system.


1.     True

2.     False



Question 9.

Which statement best summarizes the world’s reaction to stratospheric ozone depletion discussed in Chapter 7.4 of your text?


1.     The global scale of ozone depleting chemicals makes the environmental problem of ozone depletion nearly impossible to solve.

2.     International cooperation led to a significant decrease in ozone depleting chemicals that could allow natural processes to heal the ozone layer within about 50 years.

3.     While initial efforts decreased ozone depleting chemicals, in recent years, the reemergence of pollutants has led to an expansion of the ozone hole.

4.     Through the Vienna Protocol, ozone depleting chemicals were reduced by over 90% by 1998.

5.     None of the statements summarize the world’s reaction to ozone depletion.


Question 10.       

What is the central difference between climate and weather discussed in your text?


1.     There is no scientific difference between climate and weather, and, as such the terms, may be used interchangeably.

2.     Climate is the average weather over a long period of time while weather refers to the short term conditions.

3.     Weather is the average climate over a long period of time while climate refers to the short term conditions.

4.     Climate refers to conditions in a specific region of the world while weather refers to the global climate.

5.     None of the above are differences between climate and weather.