ch 10
What global temperature increase is the safe target set by the IPCC?
1.5-2 c
By 2050, how much carbon is expected to be emitted by human activities annually?
14 gig
How many carbon wedges have been identified?
18
How many tons of space based dust particles would be required to decrease solar intensity by 4 Wm-2?
2 billion tons
How much rock is required to remove one metric tonne of CO2?
2 tonnes
What percentage of global greenhouse gas emissions comes from land use changes, forestry practices, agriculture, and waste disposal?
35
Humans emitted 10 gigatonnes of carbon in the year 2010. How much remained in the air?
4 gigatonnes
Assuming carbon emission rates are not slowed, the IPCC expect global temperatures to rise by (according to the book):
5-6%
The total amount of energy lost due to inefficient energy use in the United States is:
55%
What is the maximum safe level of CO2 in the atmosphere according to the IPCC?
570 ppm
What percentage of emissions from the transport sector is from road use?
72%
Which of the following is NOT being considered to enhance the ocean carbon pump?
Decreasing the salt content of the North Atlantic Ocean
Which of the following is NOT a carbon wedge?
Double the world's current nuclear capacity.
Greenhouse gas intensity is defined as:
Rate of emissions per increment of economic growth
A carbon wedge is a SMART goal that can:
Reduce carbon emissions by 1 gigatonne by 2055
smart
Specific Measurable Achievable Realistic Timely
Solar radiation management (SRM) uses technologies based (Choose all that apply)
all 3
Which of the following are true about artificial carbon capturing trees? Choose all that apply.
all 3
Which of the following has been used to reduce road travel? Choose all that apply.
all 3
Which of the following is a way to reduce waste treatment emissions? Choose all that apply.
all 3
Which of the following statements are true? Choose all that apply.
all 3
Which of the following will reduce greenhouse gas emissions from agriculture? Choose all that apply.
all 3
Which of the issues below may result from using SRM geoengineering solutions? Choose all that apply.
all 3
Which of the following statements about geoengineering are true? Choose all that apply.
all except "easily scaled up"
Which of the following are carbon wedges? Choose all that apply.
all except eat more beef. eat more dairy... 3/5
Why is "clean coal" NOT a reality today despite the repeated claims it is? Choose all that apply.
all of the above
Which country has the highest population density on Earth?
bangladesh
Which country below did NOT greatly increase its greenhouse gas emissions in the 1950s?
china
Which country below has increased its greenhouse gas emissions the most since the late 20th century?
china
Carbon wedges fall into four major areas. Which of the below is NOT one of these areas?
geoengineering
Which of the following is NOT a SMART goal?
increase funding for renewable tech
Which is the simplest way to decrease emissions from cars and trucks?
increase gas milege
Which of the following would NOT boost the use of renewable energy?
increase mileage standards
Which of the following is NOT a carbon wedge?
increase wind capacity
The risks related to climate change are greatest for
ironically, least carbon emissions
After the energy sector, which sector is responsible for the most greenhouse gas emissions?
land use changes
What can be added to the oceans to raise pH values which would increase absorption of CO2?
lime
Which of the following is NOT an ocean fertilization chemical?
magnesium
Which of the following is the second most emitted greenhouse gas?
methane
How many years does it take to remove a single carbon atom from the atmosphere and move it into rock?
millions
What is the greatest roadblock to geoengineering?
no legal framework
The largest source of greenhouse gas emissions in the agriculture sector is
soil
How come developed countries most responsible for the historic rise in greenhouse gases are reluctant to reduce emissions?
they fear
