Economics Questions

Heat energy stored in soil, underground rocks, and fluids in the earth's mantle that can be tapped as a resource is called _______.

What percentage of Brazil's motor vehicles currently run on ethanol or ethanol gasoline mixtures

_____ automatically adjust the tint of glass to reflect or absorb light.

Switching the United States to a smart electric grid would save the U.S. economy what amount per year over the next 20 years?

Molten salt systems allow solar thermal power plants to produce electricity around the clockTrue or False

Geothermal heat pumps and geothermal exchange may be used to tap the geothermal energy stored in the earth's mantle True or False

Unnecessary energy waste costs the United States an average of

2.7 billion people in 77 less developed countries are facing a fuel wood crisis, requiring them to cut down wood faster than it can be replaced. True or False

Green building certification now exists in more than 100 countries around the world.True or False

If all costs are included for all sources, wind power is the cheapest way to produce electricity. True or False

The U.s Department of Energy estimates that the wind farms in North Dakota, Kansas and Texas could meet the electricity needs of ___.

Several underwater turbines have been installed to tap the tidal flow of the geothermal energy stored in the earth's mantle.True or False

By the end of this century, solar cells will be the world's number one source of electricity according to the chief engineer for General Electric.True or False

Because of their abundance and artificially low prices, fossil fuels will continue to be used in large quantities in the future.True or False

Cogeneration in Denmark produces a majority of its electricity.True or False

Which country gets 95% of its energy from renewable sources?

Wind power is the second fastest growing source of energy worldwide.True or False

According to the United Nations, about 60% of all the world's potential for hydro power has been developed.True or False

Coal fired power plants waste about two thirds of the energy released by burning the coal.True or False

Quel auteur montre l'effet de l'existence d'économies d'échelle externes (entre la suisse et la Thailand)?