APES Ch. 13

If a 100 W incandescent light bulb uses 360 kJ of energy per hour, and a compact fluorescent bulb uses 1/4 as much, how much energy would a compact fluorescent bulb use in 30 minutes?

45 kJ

Environmentally sound ways to maximize our energy resources include I. Increasing energy efficiency II. Increasing energy conservation III. Using fewer renewables

I and II only

Governments can encourage energy conservation by I. Raising taxes on fossil fuel use II. Offering tax credits for replacing old appliances with new ones III. Investing in smart grid technology

I, II, and III

Which of the following would NOT be a method for saving substantial amounts of energy?

Replacing fluorescent bulbs with incandescent bulbs in buildings

All of the following are benefits of "Green roofs" EXCEPT - a green roof serves as insulation for the structure -a green roof has a cooling effect on the structure and its surroundings -a green roof improves the overall air quality of the surroundings -all of the above are beneficial -none of the above are benefits of "green roofs"

all of the above are beneficial

An important aspect of utility companies is reducing peak demand events. This is best accomplished by

allowing customers to pay lower prices for energy when peak demand is low

All of the following are environmental costs of water impoundment systems EXCEPT -water behind dams can hold more heat and therefore less oxygen -lack of valuable sediments in the water downstream from dams -methane emissions after flooding the area in order to build the dam -flooding of habitats behind the dam -hydroelectric power generation creates a lot of CO2 emissions.

hydroelectric power generation creates a lot of CO2 emissions

South-facing windows are an example of

passive polar design

Energy resources that can be regenerated rapidly, such as biomass energy sources, are considered to be

potentially renewable

Which of the following sources of biofuel cannot currently be used at a large scale because of its high cellulose content?

switchgrass

Disadvantages of the use of hydrogen as a fuel include all of the following EXCEPT

the scarcity of water in which electrolysis can be conducted

Benefits of using wind energy over other renewables are all of the following EXCEPT

wind farms pose a potential threat to local wildlife populations

Use Figure 13-2. The diagram represents energy use for a household in the United States. If this was representative of a household in a developing country the chart would look very different and the primary energy source for heating/cooking would most likely be

wood/charcoal