EQ2. What percentage of 1973 global supply is served by carbon based fuels?

EQ3. What percentage of 2010 global supply is served by carbon based fuels?

EQ4. Which non-carbon energy sources have increased in use globally between 1973 and 2010? What percentage of the total primary energy supply does each of these sources provide as of 2010?

EQ5. The United States has until recently been the largest consumer of power in the world. What sector increased in consumption the most between 1950 and 2010?

IQ6. Why do you think consumption leveled off a bit since 2007-2008?

IQ7. Which of these sectors directly use petroleum (that you know with good confidence)?

AQ8. While thinking about your answer to Q7, look at the bar graph to the right. What do you think is the difference between primary consumption and total consumption?

EQ9. Between 1950 and 2010, which sector of power generation increased the most?

EQ10. Between 1950 and 2010, which sector of power generation declined?

IQ11. What percentage of electic power generation in the US utilizes carbon based fuels?

AQ12. Think back to the carbon cycle. We use combustion to release energy from carbon based fuels. What is the simple chemical equation for combustion? (Give your answer in words or a chemical forumla.)

IQ13. As carbon dioxide increases in the atmosphere, does the capacity of the atmosphere to hold heat increase or decrease?

EQ14. How much have emissions of green house gasses (GHG) increased between 1970 and 2004?

EQ15. What percentage of GHG emissions are due to fuel use?

EQ16. What percentage of GHG emissions are not due to fuel use?

EQ17. Add up the percentages of GHG from the following sources: energy supply, transport,

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