Which of the following occurs when an acid reacts with an active metal?
A) H+ is reduced.
B) The metal is oxidized.
C) both a and b
D) neither a nor b
C
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A normal fault occurs when the hanging wall moves ________ relative to the footwall.
A. to the left B. to the right C. down D. up
Most oceanic islands and seamounts are
A. large fan-shaped mounds deposited by turbidity currents. B. places where the seafloor has been buckled upward by convergence. C. constructed by volcanic eruptions that first occur under water. D. small pieces rifted apart from continents.
The Earth's interior is hot because of ________
A) friction B) an inner core of magma C) plate tectonics D) the pull of lunar gravity E) radioactive decay
Matching
1. On the generalized population age structure figure, choose the diagram with similar numbers of males and females in prereproductive and reproductive categories. 2. On the generalized population age structure figure, choose the diagram with demographic momentum. 3. On the generalized population age structure figure, choose the diagram that represents a population that is increasing slowly. 4. On the generalized population age structure figure, choose the diagram that shows a declining population.