A Porphyritic Igneous Texture Indicates That

question 26

Multiple Choice

A porphyritic igneous texture indicates that:

• A) there was water in the magma
• B) the rock cooled slowly and then quickly
• C) the rock broke apart as it flowed
• D) the rock cooled slowly
• E) the ash and pumice were hot and became compacted

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Definitions:

Congruency

The state or quality of agreeing, being compatible or consistent.

Biased Sample

A nonrepresentative sample.

Representative Sample

A small group representing a larger group in terms of age, sex, ethnicity, socioeconomic status, orientation, for example.

Multistage Sample

A sampling method involving multiple phases of selection, often used in large-scale surveys to efficiently gather data.