APES questions: ERoEI
What hockey stick is he referring to? (hint: it is from a film released a few years ago)
What was the ratio in 1930? Why?
Trace the trend from 100:1 to 25:1 to 10:1 to 3:1, explain
Explain why the energy return for corn ethanol is less than 1.00
What would change the ERoEI on solar and wind?
Why are these not really applicable to the curve?
Why is Hydrogen not really a fuel, but an energy carrier? Explain.
Why is our government pushing corn ethanol so much if the ERoEI is less than 1?
Peak Resources--
Why is the premise that exponential growth can be supported on a limited planet foolish?
The author mentions that not only is population increasing, but also what they want. How does this relate to the IPAT formula?
Which resources are always used first? Give several examples.
What happens to the energy needed to extract resources as time passes?
What is the Ore concentration at the Bingham Canyon mine. Why is this significant?
What does the term "High-Graded" mean?
Why is the "200 years of coal" statement foolish?
Where did all of the anthracite go?
What is the ERoEI trend for coal?
Explain why Uranium is not a permanent solution either.
Explain "peak uranium"
For each bushel of wheat farmed, how much topsoil is lost?
We know you are underwater this weekend, with your crowded social calendar, productions, sports, college essays and other things, so let's make this due Tuesday of next week, ok? We'll have more to add, but this is a good start.