Which of These Textures Help Geologists Determine If a Rock

question 32

Multiple Choice

Which of these textures help geologists determine if a rock is of intrusive origin?

• A)Aphanitic
• B)Pyroclastic
• C)Porphyritic
• D)Phaneritic

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Definitions:

Activation Energy

Energy that must be added to molecules to initiate a reaction.

Chemical Reactions

Processes that involve the transformation of substances by breaking and forming chemical bonds leading to new substances.

Temperature

A physical quantity expressing the subjective perceptions of hot and cold, measured by a thermometer in units of Celsius, Fahrenheit, or Kelvin.

Concentration

The quantity of a substance within a certain volume of solution or mixture, or the process of increasing the amount of a substance in a solution.