The main hazard of an eruption that forms a large caldera is
A. hot fragments thrown a short distance from the volcano.
B. burning, building collapse, and suffocation from an eruption column and pyroclastic flows.
C. destruction by moderately fluid lava flows that can flow far from the volcano.
D. volcanic mudflows and landslides.
Answer: B
You might also like to view...
A laboratory analysis of index minerals in a metamorphic rock indicates that temperature and pressure were decreasing as a specific mineral was growing. Why would the conditions for mineral growth change?
A. The rock was being uplifted to the surface. B. Hydrothermal fluids were invading the rock. C. A blob of magma was moving toward the rock. D. The rock was being carried downward by subduction. E. The rock was being folded by differential stress.
What is a typical residence time for a stream in Ohio?
A. 1 hour B. 1 day C. 1 week D. 1 month
The Cascade Range volcanoes
A. are now expected to become extinct as they cool. B. pose little threat, as their eruptions are typically quiet ones. C. sit above a subduction zone. D. All of the choices are correct.
Primary pollutants from burning coal include all of the following except
a. droplets of sulfuric acid b. sulfur dioxide c. suspended solid particles d. Ozone e. None of the above