How does earthquake magnitude differ from intensity?
A) Magnitude reflects energy release, while intensity reflects the amount of shaking.
B) Intensity reflects energy release, while magnitude reflects the amount of shaking.
C) The two terms are synonymous, referring simply to the size of an earthquake.
D) Magnitude is a result of the amount of shaking, which is determined by intensity.
A
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According to the following reaction, which molecule is acting as a base?H3O+ + HSO4- ? H2O + H2SO4
A.
| H2SO4 |
B. H2O
C. H3O+
D. HSO4-
E. none of the above
Which of the following is NOT one of the major changes occurring globally in agriculture?
A) increase in the use of chemicals B) increase in the use of machinery C) increased integration into wider economic and industrial systems D) increase in the number of people employed in agriculture E) both increase in the use of chemicals and machinery
This map shows contours of the water table, the location of four factories (labeled A, B, C, and D), and contaminated (x) and uncontaminated wells (-). Which factory contaminated the groundwater?
A) Factory A
B) Factory B
C) Factory C
D) Factory D
What features of ocean basins are chains of basaltic rock that stretch more than 1.5 times Earth's circumference around
the world at spreading centers? a. Abyssal plains b. Abyssal hills c. Seamounts d. Oceanic ridges e. Island arcs