Which of the following are NOT differences between an eruption column and pyroclastic flow?
A. Tephra in an eruption column mostly cools before it reaches the ground.
B. Pyroclastic flows form from a higher gas flux.
C. A pyroclastic flow mostly flows downhill, whereas a column rises at first.
D. Damage from an eruption column can be more widespread.
Answer: B
You might also like to view...
If you filter sea water to remove all of the particles, you would be left with a clear
A. pure liquid. B. heterogeneous mixture called a solution. C. homogeneous mixture called a suspension. D. homogeneous mixture called a solution. E. heterogeneous mixture called a suspension.
To encourage the development of sustainable agriculture, U.S. national agricultural policies will need to support all of the following, except
A) incorporating economic externalities such as soil degradation, pollution, and overuse of water supplies. B) more job creation in agriculture. C) continued support and subsidy of large monoculture farms. D) support of urban and organic agriculture.
Which of the following would be described as having ample rainfall or moisture from fog, with large conifers such as Sitka spruce and Douglas fir?
a. temperate rain forest b. temperate deciduous forest c. tropical rainforest d. chaparral e. taiga
What are depressions in glacial deposits made by the melting of blocks of underlying ice?
a. erratics b. eskers c. arêtes d. kettles