Using the Choices Below, Select the Statement That Best Explains

question 9

Multiple Choice

Using the choices below, select the statement that best explains how dissolved gases drive volcanic eruptions.

• A)As the magma rises, gas bubbles contract, fragmenting the material and expelling it from the vent.
• B)As the magma rises, gases reduce silicate mineral chains by breaking silicon-oxygen bonds; the result is an explosion.
• C)Confining pressure decreases on a rising magma, allowing gas bubbles to expand and fracture the magma.This process further decreases pressure on the magma and will result in an explosive event.
• D)Decreases in confining pressure result in decreasing viscosity of the magma, allowing the magma to ooze from the volcano.

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Definitions:

Process Costing System

A costing method used in production environments where similar products are mass-produced, allocating costs over the whole production process.

Equivalent Units

A concept used in cost accounting to convert partially completed units of production into a number of fully completed equivalent units.

Process Costing System

A process costing system is an accounting method used to allocate costs to units of product in continuous or repetitive processes, suitable for industries producing homogeneous products.

Conversion Costs

Conversion costs are manufacturing expenses incurred in converting raw materials into finished products, including direct labor and manufacturing overhead.