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| 765605602 | What % of all energy used in the US is wasted? | 84% | 1 | |
| 765605603 | How much of that waste is unnecessary? | 43% | 2 | |
| 765605604 | What is the life-cycle cost of an energy using devise? | Initial costs + lifetime operating costs | 3 | |
| 765605605 | What three devices are perhaps the least efficient devices in widespread use? | 1. Incandescent light bulb 2. Internal combustion engine 3. Nuclear power plant | 4 | |
| 765605606 | How much energy do the following waste: Incandescent light bulb, Internal combustion motor vehicles, Nuclear power plants when energy is used for heating?? | Incandescent light bulb--95% Internal combustion motor vehicles-86-90% Nuclear power plants--86-92% | 5 | |
| 765605607 | What is cogeneration? | Using steam to generate electricity and then to warm/cool buildings | 6 | |
| 765605608 | Why are most of the electric motors used today inefficient? | Run at full speed-could use adjustable speed drives. | 7 | |
| 765605609 | What is *"the best way"* to save energy and money in transportation? Other ways? | *Increase fuel efficiency* Other: Mass transit, bike, barges, etc. | 8 | |
| 765605610 | From 1973-1985 average fuel efficiency of cars rose by 37%. Why have they fallen since them? | Popularity of SUVs | 9 | |
| 765605611 | What is CAFE? Why is the auto industry trying to eliminate them? | Corporate average fuel economy--gov't mandated -they have strict standards which limit auto diversity | 10 | |
| 765605612 | What mpg can the new hybrid cars obtain? | up to 150 mpg -VW small car get 235 mpg | 11 | |
| 765605613 | Why is there little public interest in fuel efficient vehicles? | Cheap gas in US (but there are hidden costs) | 12 | |
| 765605614 | Who is the largest energy user in the US? | Military | 13 | |
| 765605615 | How much extra does it cost to super-insulate a house? | 5% more | 14 | |
| 765605616 | How long does it take to pay back that cost at today's energy prices? | within 5 years | 15 | |
| 765605617 | How much does super-insulation save a homeowner over a 40-yr period? | $50,000-100,000 | 16 | |
| 765605618 | How can the energy efficiency of an existing house be improved? | Plug leak, add insulation, energy saving windows and lighting | 17 | |
| 765605619 | What is a strawbale house? | House made from straw bales-straw has a very high insulation value | 18 | |
| 765605620 | What is the most energy efficient way commonly used to heat water for washing and bathing? | Tankless water heaters | 19 | |
| 765605621 | What is the Energy Star program? | Major household appliance ranked according to their energy efficiency. Only those that are the most efficient can carry the ES label. | 20 | |
| 765605622 | How much does a fluorescent bulb save over an incandescent over a 10-yr period? | $48-70 | 21 | |
| 765605623 | What are the energy savings of the use of a microwave for cooking? | 25-50% | 22 | |
| 765605624 | Why isn't the average person in the US doing more to reduce energy waste? Or any other waste for that matter! | Cheap energy, lack of incentives, lack of information especially of life cycle costs. | 23 | |
| 765605625 | What is the difference between a passive and an active solar heating system? | Active requires energy input to operate fans and pumps | 24 | |
| 765605626 | What is the typical pay-back time for a passive solar system? | 3-7 years | 25 | |
| 765605627 | What are some energy efficient ways to cool a house? | earth tubes, appropriate design, evaporative colors in arid regions | 26 | |
| 765605628 | An acre of lawn is equivalent to how much air-conditioning? | 1 ton | 27 | |
| 765605629 | What is a photovoltaic cell? What are they commonly called? | Solar cells--of semiconductor material where light causes electrons to flow. | 28 | |
| 765605630 | What are the advantages of solar cells? | Fairly high net energy Work on cloudy days Quick installation Easily expanded or moved No CO2 emissions Low environmental impact Last 20-40 yrs Low land use(if on roof) | 29 | |
| 765605631 | What are the disadvantages of solar cells? | 1. Light not 24 hrs/day--need some sort of back up 2. Other buildings/structures may block light 3. Expensive, but costs are coming down with new technologies | 30 | |
| 765605632 | What different types of hydropower are there? | small, large scale, pumped | 31 | |
| 765605633 | What country gets 99% of its electricity from hydropower? | Norway | 32 | |
| 765605634 | What are the pros of hydropower? | -moderate to high net energy -high efficiency (80%) -low-cost electricity -long life span -No CO2 emissions during operation -may provide flood ctrl below dam -provides water for yr-round irrigation | 33 | |
| 765605635 | What are the cons of hydropower? | -High construction costs -High environmental impact -High CO2 emissions from biomass decay in shallow tropical reservoirs -Floods natural areas -Converts land habitat to lake habitat -Danger of collapse -Uproots people -Decreases fish harvest below dam -Decreases flow of natural fertilizer (silt) to land below dam | 34 | |
| 765605636 | Where are two large tidal energy facilities? | Rance estuary in France, Bay of Fundy in Canada | 35 | |
| 765605637 | What are the pros and cons of tidal energy? | Works well but good sites are limited | 36 | |
| 765605638 | What is the world's fastest growing energy resource? | Wind power | 37 | |
| 765605639 | What has the Bush administration done RE wind power? | Cut funds for research and development | 38 | |
| 765605640 | What country is the world's largest producer of wind power and manufacturer of wind turbines? | Denmark | 39 | |
| 765605641 | What are the advantages of wind power? | -moderate to high net E -High efficiency -Moderate capital cost -Low electric cost (and falling) -Very low envi impact -No CO2 emissions -Quick construction -Easily expanded | 40 | |
| 765605642 | What are the disadvantages of wind power? | >Steady winds needed >Backup systems when needed winds are low >High land use for wind farm >Visual pollution >Noise when located near populated areas >May interfere in flights of migratory birds and kill birds of prey | 41 | |
| 765605643 | What % of people in developing countries heat and cook with wood or charcoal? | 70% | 42 | |
| 765605644 | What is biogas? | 60% methane, 40% CO2 produce from biomass by bacteria | 43 | |
| 765605645 | How much does it cost to make a biogas generator? | ab $50 including labor | 44 | |
| 765605646 | What is ethanol made from? | sugar and grain crops | 45 | |
| 765605647 | What is methanol made from? | natural gas, organic waste | 46 | |
| 765605648 | What are the pros of using biofuels? | -Large potential supply -Moderate costs -No net CO2 increase if harvested and burned sustainably -Plantation can help restore degraded lands -Can reduce water pollution -Recycles waste products | 47 | |
| 765605649 | What are the *cons* of using biofuels? | -Nonrenewable if harvested unsustainably -Moderate to high envi impact -CO2 emissions if harvested and burned unsustainably -Soil erosion, water pollution, and loss of wildlife habitat -Plantation could compete with cropland -Often burned in inefficient and polluting open-fires and stoves | 48 | |
| 765605650 | What is considered the "fuel of the future"? | Hydrogen | 49 | |
| 765605651 | What is geothermal energy? | using high temperatures from the earths interior | 50 | |
| 765605652 | Where is it currently being used? | 22 countries--Iceland, Japan, California, Chile | 51 | |
| 765605653 | What are the *pros* of geothermal energy use? | very high efficiency moderate net E at accessible sites lower CO2 emissionthan fossil fuels low cost at favorable sites low land use low land disturbance moderate envi impact | 52 | |
| 765605654 | What are the cons of geothermal energy use? | -scarcity of suitable sites -depleted if used too rapidly -CO2 emissions -Moderate to high local air pollution -Noise and odor (H2S) | 53 | |
| 765605655 | What is micro power? | Small generating facilities | 54 | |
| 765605656 | What are the advantage of decentralization? | more local control, less problems with terrorism | 55 | |
| 765605657 | We have the technology why aren't we using more energy alternative to nonrenewable fuels? | economics and politics | 56 |
