Which of the following are differences between an eruption column and pyroclastic flow?
A. Tephra in an eruption column stays hotter until it reaches the ground.
B. Damage from an eruption column is more restricted than a pyroclastic flow.
C. A pyroclastic flow rises higher into the atmosphere than an eruption column.
D. A pyroclastic flow forms when the gas flux cannot support the column.
Answer: D
You might also like to view...
Population growth scenarios project that at medium fertility rates the world population will level off at 10 billion.
Answer the following statement(s) true (T) or false (F)
) According to Ratzel's theory of the state, imperialism emerges from the need for territorial expansion tied to
A) population growth. B) centrifugal forces. C) low rates of natural increase. D) irredentism. E) a new world order
Low-density polyethylene is produced from ethylene by using which of the following?
A) peroxide initiators B) Ziegler-Natta catalysis C) either a or b D) neither a nor b
Risk assessment usually involves a statement regarding the possibility that something could occur.
Answer the following statement true (T) or false (F)