Who determined that S waves were unable to survive deep passage through the Earth's interior?
A) Alfred Wegener
B) Richard Oldham
C) Inge Lehmann
D) Francis Bacon
B
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Over the past 50 years, global life expectancy has
A) decreased by about 5 years primarily due to increases in viral infections. B) stayed about the same due to new diseases spread by global climate change. C) increased by about 5 years due to the development of many poor nations. D) increased by more than 20 years due to better health care and nutrition worldwide.
The Southern Oscillation
A) occurs independently of El Niño. B) occurs only during La Niña events. C) is linked to changes in atmospheric pressure over the western Pacific and eastern Indian Oceans. D) has not occurred for several decades. E) is also called the Arctic Oscillation.
The transformation of snow into glacial ice in Antarctica takes ________ than in midlatitude alpine glaciers because ________
A) less time; more snow fall in the polar regions each year slows the glacier formation process B) less time; there is more melting and refreezing in the midlatitudes and, therefore, it takes much longer there C) longer; the long summer days in Antarctica (up to 24-hours) results in more sunlight impeding the glacier development process D) longer; the dryness of the Antarctic climate and minimal snowfall as compared to wetter climates with constant snowfall
In autumn, the leaves of deciduous trees turn brilliant shades of red, orange, and yellow in the humid continental climate
a. True b. False