Which of the following is one reason that snow is more common in winter than in summer?
a. Precipitation falling from a cloud as snow has a better chance of surviving when temperatures
are cold.
b. Very tall clouds are more common in winter than in summer.
c. Cumulonimbus clouds rarely occur in winter.
d. The atmosphere is usually more unstable in summer.
a
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Describe the theory of plate tectonics.
What will be an ideal response?
Some geologists think that the large lava flow to the north of SP Mountain occurred before the final formation of the SP Mountain cinder cone itself. What evidence that you can see supports this conclusion? (Hint: Think about the structure, and so the relative strength, of a cinder cone.)
Look at the following volcanoes (note that the maps are of several different scales): • Mount Vsevidof (53°07'35"N, 168°41'16"W), a composite volcano in Alaska (shown on Map T-2, Map T-21b, and Figure 34-2) • Crater Mountain (37°52'42"N, 119°00'25"W), the highest peak of the Mono Craters, a chain of rhyolitic plug dome volcanoes in California (shown on Maps T-23a and T-23c) • SP Mountain (35°34'56"N, 111°37'55"W), a basaltic cinder cone in Arizona (shown on Maps T-22a and T-22b and Figure 34-3) • Mauna Loa (19°28'17"N, 155°35'41"W), a large shield volcano on the Big Island of Hawai‘i (shown on Maps T-1 and T-21a) What will be an ideal response?
New crust is being generated ____
A) in the deep ocean trenches B) at convergent plate boundaries C) at divergent plate boundaries D) at the centers of tectonic plates
All of the following are major problems in addressing worldwide hunger today, except
A) insufficient production of crops in poor nations. B) the distribution of available food. C) profitability of food industries in developed nations. D) decreased yields due to widespread droughts and other environmental impacts of food production.