Evidence of reversals in the Earth's magnetic field is found along areas of seafloor spreading
Indicate whether the statement is true or false
TRUE
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The amount of useful work accomplished by a particular input of energy into a system is
a. Energy quality b. Energy potential c. Energy capacity d. Energy efficiency e. Energy loss
Australia and Oceania face numerous environmental risks. Write an essay in which you describe and assess the severity of these problems.
What will be an ideal response?
The economics of solar electricity are
A) bleak because there is a large gap between the price of energy from coal and from PV cells. B) excellent for CSP technology but discouraging for PV cells. C) growing at a phenomenal rate as the current $60 billion industry is expected to double by 2020. D) less promising because the costs of ecosystem damage and pollution are not counted.
Which statement does not describe an advantage of using conventional crude oil as an energy source?
A. high net energy yield B. efficient distribution system C. environmental costs included in market price D. ample supply for several decades E. low land disruption