Reliability Is ________ for Validity

question 26

Multiple Choice

Reliability is ________ for validity.

• A) a necessary and sufficient condition
• B) a necessary but not sufficient condition
• C) a sufficient condition
• D) not at all relevant

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Definitions:

Caldera

A broad volcanic depression, generally the result of a substantial eruption followed by the fall-in of the volcano's opening.

Banded Iron Formations

Layers of iron-rich minerals alternated with silica or chert, deposited in marine environments over 2.5 billion years ago and are important iron ore sources.

Metal-rich Fluids

Liquids emanating from the Earth's crust, usually heated by magma, that are high in dissolved metals, often found in volcanic and hydrothermal areas.

Magma

A molten rock material beneath the earth's surface, which can solidify to form igneous rocks.