Economics Questions

A 2009 U.s Department of the Interior study indicates that wind farms off the Atlantic and gulf coasts could generate enough electricity to eliminate all_____.

Orienting a building to face the sun in order that solar energy is used to help heat the building, would save what percentage of its heating costs?

Solar cells have many advantages. What is not one of these?A. moderate net energy yieldB. little or no direct emissions of carbon dioxide C.electricity storage systems readily availableD. easy to install and expand as neededE. competitive costs for newer cells

Which of the following is not true of heating a house with passive or active solar energy?A. moderate to high net energy B. very low carbon emissionsC. very low land disturbanceD. low installation and maintenance costs for active systemsE. moderate cost for passive systems

Experts have concluded that the best way to make the transition to using mostly renewable energy resources during this century is a combination of improved energy efficiency and the carefully regulated use of ____.

Tapping just 2% of the hot, dry rock geothermal energy in the U.S. could produce how much of the energy needed by the U.S.?

The weakness of electric cars is their___.

What percentage of the commercial energy used in the United States is wasted?

The chief ingredient or most solar cells is ___.

Which of the following cannot (at least currently) be used to generate electricity directly?A. ocean tidesB. Ocean WavesC. heavy rainsD. water behind damsE. flowing river water

The world's second fastest growing energy resource is___.

A 2009 study estimates that the united states has enough wind power potential to produce ___ times its current electricity needs.

Which of the following is not considered biomass?A. woodB. crop residuesC. charcoal D. animal manureE. coal

Which of the following is a disadvantage of hydroelectric plants?A. low net energyB.large land disturbanceC. little untapped potentialD.high cost electricity E. high emissions of carbon dioxide

What is not considered to be a hidden cost of a gallon of gasoline?A. government subsidies for oil companiesB. tax breaks for car manufacturers and road buildersC. research and development for hybrid carsD. cost of pollution control and clean up E. costs of military protection of oil supplies in the Middle East

What is the world's leading renewable energy source used to produce energy?

What country is not one of the top four producers of hydropower?A. canadaB. chinaC.brazilD. germanyE. united states

Growing biomass in plantation settings has some disadvantages. What is not one of these?A. soil nutrients are depletedB. clearing forests for plantations degrades biodiversity C.Non-native species planted in plantations can spread to nearby ecosystemsD. plantation grown biomass is very expensive to burnE. clearing forests for plantations reduces carbon dioxide capture

Which country currently gets almost half of its electricity by burning wood and agricultural waste for co generation?

What is the world's single largest human caused source of methane?