The Difference Between Tephra and Tuff Is That ____________

question 12

Multiple Choice

The difference between tephra and tuff is that ____________.

• A) tephra is created in ash falls, whereas tuff is created in pyroclastic flows
• B) tephra is unlithified, whereas tuff is lithified
• C) tephra is always silicic, whereas tuff is always basaltic
• D) all of the above

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Definitions:

Phase Rotation

The direction of rotation of a magnetic field produced by the voltages of a poly-phase power system.

Kilovolt-ampere

A unit of apparent power in electrical systems, equivalent to 1,000 volt-amperes, often used in the rating of electrical equipment.

Liquid-cooled

A method of heat dissipation that uses a circulating fluid, typically water or coolant, to remove heat from components.

Air-cooled

Pertaining to a method of cooling machines, engines, or electronic devices by circulating air to remove heat.