This material ejected from an erupting volcano includes airborne particles of all size.

A. tephra
B. lahar
C. ash


Answer: A

Environmental & Atmospheric Sciences

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High pressure troughs exist where cooler, denser air begins to descend at about

____________________ to ____________________ degrees latitude, N and S. Fill in the blank(s) with the appropriate word(s).

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Which country is facing the greatest overall environmental problems?

a. Sri Lanka b. Bangladesh c. Nepal d. Pakistan e. India

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If a stream has just the gradient and discharge to transport its sediment load, it is said to be

A) "fit." B) competent. C) graded. D) in a nonequilibrium state.

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Earthquake prediction is ________

A) generally good if you live in an area along a plate boundary because we know how fast the plates are moving and can measure the stress accumulation B) possible for short times before some earthquakes based on things like animal behavior, but the U.S. does not make use of this method. C) not possible D) somewhat good for very long term statistical analyses based on ideas like mapping seismic gaps

Environmental & Atmospheric Sciences