The question can try 2 times. If the first time answer not all correct, it need to be fix. I attached the question below. Please check the question clearly. I need it all correct.
Question 1
1 pts
Which of the following statements about past climate is TRUE?
There have always been large ice sheets on Earth but they have varied in size.
In the past Earth has been much hotter and colder than today but since the beginning of human civilization
our climate has been very stable.
O Milankovitch cycles are not important factors when considering why climate has changed over the last 2
million years.
The temperature rise over the last century is not unusual – similar changes have occurred within the last 1000
years.
Question 2
1 pts
What causes the LARGEST uncertainty in our estimates of future climate changes by 2100?
how quickly ice sheets will respond
o the amount of greenhouse gases humans choose to emit over the coming decades
o the response of clouds and precipitation
O possibility for sudden shifts such as the melting of sea ice or the release of methane from permafrost
Question 3
1 pts
A global increase in temperatures will not be distributed evenly across the Earth – some areas will
not warm by much whereas other areas will warm a lot. Where will the greatest increase in
temperatures be?
the tropics
O Southern California
O the Arctic
highland regions
Question 4
1 pts
One proposed idea to prevent climate change is to have a tax on goods and services that produce
carbon dioxide. This would likely raise the price of airplane flights and so reduce the number of
flights that people take per year. This would be an example of:
O conservation
O efficiency
O carbon-free energy
O carbon capture and storage
O geoengineering
Question 5
1 pts
Using the figure below, how much carbon dioxide (in ppm) has already been added to the
atmosphere by burning coal, oil and gas (purple areas)? How much could we add to the atmosphere
total (in ppm) if we burned all the coal, oil and gas available to us (purple and blue areas)?
(Tip – make sure you use the correct axis).
).
Fossil Fuel CO2 Reservoirs
1400
IPCC
www H600
1200
Reserve Growth
1000 Proven Reserves
500
Methane
Emissions (1751-2006)
Hydrates
800
400
.
CO, (ppm)
300
600
WEC
400
4200
200
100
Shale
Oil
Tar
Sands
Other
0
Oil
Gas
Coal
Added 100ppm so far but could potentially add a total of 500ppm
Added 170ppm so far but could potentially add a total of 830ppm
Added 300ppm so far but could potentially add a total of 2000ppm
Question 6
1 pts
What is the main reason that it will be difficult to rely on wind and solar for all of our electricity in
California?
Because it is not always sunny and not always windy.
O Because it will be too expensive to switch to renewable energy.
Because there is not enough land in California to build enough solar panels and wind turbines to supply our
energy
Question 7
1 pts
Use the diagram from Lecture 5 to help you answer the following question. Why are geoengineering
solutions to climate change, such as space mirrors or ocean fertilization, not necessarily good ideas?
O Many of them are not yet possible because we don’t have the necessary technology.
Many of them would be much more expensive to implement than simply cutting carbon emissions.
Many of them could have dangerous unintended consequences to ecosystems or weather on Earth.
O Many of them would help lower temperatures but would not prevent ocean acidification
O All of the above!
D
Question 8
1 pts
Which of the following statements is TRUE?
The reason for the unusual thermal properties of water is the covalent bonds holding the oxygen and
hydrogen atoms together.
Water is less dense than ice because the molecules have more energy.
O Much of the water we use in our daily life is “hidden” in the food and goods we use.
D
Question 9
1 pts
The specific heat of a substance is 500 J/kg/oC. How much energy do I have to add to the substance
to cause it to warm from 2 oC to 9 oC?
100J/kg
250 J/kg
2500J/kg
O 3500 J/kg
Question 10
1 pts
Which unusual property of water causes Earth’s climate to be more moderate (i.e. less extreme
temperature changes) near the coasts?
O high specific heat and heat capacity
high latent heat of vaporization
high melting and boiling points
low density as a solid