CHAPTER 10 ( 5) !!!!!!!!!!!!!!

Ethanol is a controversial biofuel because it is still unclear how much carbon dioxide is emmited during the production and burning of ethanol compared to conventional gasoline

• true

• false

geothermal heat pumps may be caused to exploit the temperature difference between earth's surface and underground in earth's mantle

• true

• false

hydrogen may be a future energy source to power vehicles

• true

• false

we can make energy use more sustainable by using energy more efficiently and relying on a mix of renewable energy sources

• true

• false

governments do not have the power to control the shift from nonrenewable to renewable energy sources

• true

• false

energy conservation is best achieved by

• passive solar

• hybrid /hybrid cars

• energy efficiency/improved energy efficiency

• hydropower;solar

fossil fuels are artificially cheaper than renewable sources of energy because of :

• passive solar

• subsidies /inadequite pricing

• hybrids/hybrid cars

• biomass

electric gasoline power vehicles are called

• biomass

• passive solar

• green architecture

• hybrid/hybrid cars

......................... is based on energy- efficient and money saving building designs .

• biomass

• geothermal

• green architecture

• passive solar

................... provides greater conversion efficincies than traditional generation methods because two useful forms of energy are produced from the same fuel source :

• biomass

• cogeneration, combined heat and power

• green arrchitecture

• geothermal