Airborne pyroclasts have their finest grains settle down from the atmosphere first, closest to the volcano, followed by progressively coarser material at greater distances away.
Answer the following statement true (T) or false (F)
False
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Large volcanic eruptions with an ash veil that enters the stratosphere, tend to __________ at the
surface. a. increase temperatures b. increase precipitation c. decrease temperatures d. have no effect
Jeans provide a good example of material culture that is adopted by a number of different societies. This refers to what type of material culture?
A) Punk culture B) Popular culture C) Folk culture D) Western culture
Which of the following is correct in regards to the geologic time scale?
A) An epoch is composed of one or more periods. B) The largest defined unit is an eon or, according to some, a supereon. C) An era is the smallest unit of geologic time. D) Every period is composed of 2 epochs.
Passive continental margins are created at
A. divergent plate boundaries B. convergent plate boundaries C. transform faults