EGEE 102
Energy Conservation and Environmental Protection

Review & Extra Resources



Watch the following 3:12 Review for Lesson 2.

Lesson 2 Review

EGEE 102, Lesson 2 Review

Let's see the review for Lesson 2. In Lesson 2, we talked about energy intensity. You need to know what energy intensity is. And you need to also know about these quadrillion BTUs. Quadrillion BTUs is 10 raised to 15 BTUs. Trillion is 12, and quadrillion is 15, 10 raised to 15.

And the highlights of world energy consumption and United States energy consumption are given here. You need to know about that. There was a mistake on screen 14 of the lessons, where when you put in, what is the percentage of fossil fuels? You put in 85%, and it says Wrong. But that is 85%. So just be aware of that.

And you should also know how to calculate doubling time. There was an equation that I'm going to provide you. But that equation is 70 over rate of increase, gives you the doubling time. So that will be some numerical problems relating to this. And basically, it comes from the equation n equals n0 e raised to rt. OK. So you need to know how to use this equation and calculate, or project, the energy demand in future.

And try to remember the differences between energy reserves and resources, and how long each of these reserves last. Approximate numbers. You don't need to remember exact numbers, but roughly, what is the lifetime for coal, oil, and natural gas, for both United States and the world. You don't have to worry about any other country.

Pretty much, those are the facts that you need to know for this chapter. I don't expect you to remember exact numbers, statistics. But you need to know the top ones. Like, most of the petroleum is used for transportation. Most of the coal is used to generate electricity.

You don't need to remember how much, but the majority. Or, most of the oil is used for transportation. And those kinds of details. Like which country has most of the oil deposits. Or how do we do, in terms of deposits, et cetera.

Those are the basic things. And again, you don't need to remember any of the formulas or any of the conversion factors. I will provide you with those things. If you have any questions, you can always send me a question or post a question on the message board. And I will try to answer those.

Review Sheet – Energy Supply and Demand

  • Gross Domestic Product (GDP)
  • Energy Intensity
  • Quadrillion Btus = 1015 Btus
  • World Energy Consumption
    • Oil is the most utilized energy source in both 2002 and 2025
    • Consumption of all the energy sources will increase from 2002 to 2025
  • United States Energy Consumption
    • First in worldwide reserves of coal
    • Oil is the most utilized energy source in both 2002 and 2025
    • Consumption of all energy sources except hydropower will increase from 2002 to 2025
    • 66.5% of petroleum is used for transportation
    • More than half of petroleum needs are met by imports
    • US has almost one fourth of the world’s reserves of coal
  • Doubling time
  • Energy reserves and resources
    • "Reserves" represent that portion of demonstrated resources that can be recovered economically with the application of extraction technology available currently or in the foreseeable future. Reserves include only recoverable energy.
    • “Resources” represent that portion of the energy that is known to exist or even suspected to exist irrespective of technical or economic viability. So reserves are a subset of resources.
  • How long will the reserves last?

Test Yourself

The questions below are your chance to test and practice your understanding of the content covered in this lesson. In other words, you should be able to answer the following questions if you know the material that was just covered! If you have problems with any of the items, feel free to post your question on the unit message board so your classmates, and/or your instructor, can help you out!

  1. Why is the energy use per person in the world increasing?
  2. The United States, with 5% of the world's population, uses about 25% of the world's energy and contributes 25% of the world's greenhouse gas emissions. Explain.
  3. List the reasons why the United States per capita energy consumption is the highest of any other region in the world.
  4. List reasons why the United States energy consumption per dollar of GDP is higher than most of the industrialized nations.
  5. What is the difference between reserves and resources?
  6. List the changes that you would make in your personal lifestyle if you were mandated to reduce your energy consumption by 25%.
  7. What variables determine the lifetime of a nonrenewable resource?

Extra Resources

For more information on topics discussed in Lesson 2, see these selected references:

  1. Hinrichs, R. A., “Energy,” Saunders College Publishers, Philadelphia, PA, 1992.
  2. Aubrecht, G. L., “Energy,” Prentice Hall, Inc., Englewood Cliffs, NJ, 1995.
  3. Fay, J.A. and Golomb, D. S., “Energy and the Environment,” Oxford University Press, New York, NY, 2002.
  4. Christensen, J. W., “Global Science: Energy Resources Environment”, 4th edition, Kendall/Hunt Publishing Company, Dubuque, IA, 1996.
    Energy Information Administration, Annual Energy Review, U.S. Department of Energy, 2004.
  5. Energy Information Administration, Annual Energy Outlook, DOE/EIA 0383 (2004), U.S. Department of Energy, Washington D.C., 2004.
  6. Energy Information Administration, International Energy Outlook, DOE/EIA 0484 (2004), U.S. Department of Energy, Washington D.C., 2004.