Parabolic mirrors ________ sunlight on a collecting medium.
A. deflect the most
B. selectively reflect the brightest
C. focus intense
D. selectively focus the brightest
E. diffuse intense
Answer: C
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By mapping population density, the concentration of rivers, and the gradient of streams using GIS, geographers were able to
A. determine the highest risk areas for river blindness in Mozambique. B. predict the outcome of the soccer World Cup competition in 2010. C. suggest the best areas for whitewater rafting in South Africa. D. locate sources of water for irrigating deserts.
The prefix nimbo- and the suffix -nimbus means
A) clouds that occur in the middle altitudes (2000-6000 m). B) that the clouds are producing precipitation. C) clouds with strong vertical development. D) that clouds are generally forming. E) that clouds are generally dissipating.
Oil shale and tar sand share each of the following environmental problems except
A. the production of quantities of ash when the fuel is burned. B. the need for a great deal of water in processing. C. the production of large volumes of waste rock from processing. D. the need to mine the rock to extract the fuel.
The albedo of the Moon is 7 percent. This means that
a. the Moon can absorb seven times more energy than Earth. b. ?7 percent of sunlight striking the Moon is absorbed. c. ?the Moon emits only 7 percent as much energy as it absorbs from the Sun. d. ?93 percent of sunlight striking the Moon is reflected. e. ?7 percent of sunlight striking the moon is reflected.