An increase in earthquake magnitude by one whole number (for example, from 6 to 7) means that the energy released has increased by a factor of about ____
a. 10
b. 30
c. 200
d. 1,000
b
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Which of the following combinations represents an accurate association between scale and wind type?
A. microscale and chinook wind B. mesoscale and land breeze C. synoptic scale and sea breeze D. planetary scale and lake breeze
Most biological productivity in the ocean occurs in the euphotic zone
Indicate whether the statement is true or false
What percent of a parent radioactive element would remain after three half-lives of decay to its daughter isotope?
A. 12.5 B. 50 C. 75 D. 25 E. 6.25
The amount of gasoline used by each person generally increases with per capita land consumption. However, this graph shows that gasoline consumption is much lower in Australia than in the United States. Why is this the case?
A) Australia has a better road system. B) Australia has better public transportation. C) Australia is located in the Southern Hemisphere. D) Australia is a smaller country. E) Australia has fewer major cities.