The modified Mercalli scale measures ____
a. earthquake magnitude
b. earthquake intensity
c. seismic waves
d. fault displacement
b
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All of the following are approaches to reducing eutrophication except ________
A) planting and maintaining vegetation buffers around ditches and streams that trap nutrient and sediment runoff B) upgrading stormwater systems to capture runoff from roads and parking lots C) applying fertilizers to farmland just before heavy rains are predicted D) using artificial wetlands to filter stormwater and farm runoff E) reducing fertilizer use on farms and lawns
An enterprising travel agent trying to sell you a summer vacation package to Phoenix, Arizona, claims that the summertime relative humidity is above 90 percent. Can this be true? Explain
What will be an ideal response?
Siberian Express is the term used when:
A) an mP air mass from the north Atlantic enters New England and generates snowfall. B) an unusually cold air mass enters the Rocky Mountains. C) a modified air mass originating in Siberia reaches the Pacific Northwest. D) an outbreak of bitterly cold air from Canada intrudes over a large part of the United States.
Which of the following is NOT true regarding the effects of the 1991 Mount Pinatubo eruption?
A) Sulfur dioxide (SO2 ) aerosols decreased in the atmosphere due to the presence of ash. B) An aerosol cloud covered the globe, from 20° S to 30° N. C) A small, temporary decrease in average temperatures followed. D) Aerosols mixed with other atmospheric debris, increasing Earth's albedo.