When an eruption cloud spills downslope from the crater rim, it forms a(n) _______________ flow

Fill in the blank with correct word.


ANSWER: ?pyroclastic

Environmental & Atmospheric Sciences

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Vitreous luster is characteristic of:

a. pyrite b. limonite c. quartz d. galena

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Which of the following does not describe a stream's capacity?

A) It is always closely related to a stream's competence. B) It is defined as a volume of sediment passing a given point during a given time. C) It varies tremendously from time to time. D) It depends mostly on fluctuations in the volume and velocity of flow. E) It is the potential load a stream can transport.

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As fission occurs in a nuclear reactor, the concentration of U-235 atoms

A. decreases. B. increases. C. converts to plutonium atoms. D. remains constant.

Environmental & Atmospheric Sciences

The dominant cooling process on Earth results from condensation

Indicate whether the statement is true or false

Environmental & Atmospheric Sciences