The Main Idea of Seafloor Spreading Is That

question 35

Multiple Choice

The main idea of seafloor spreading is that

• A)lithosphere floats on the asthenosphere.
• B)new crust forms at a spreading center and old crust is recycled at a subduction zone.
• C)new crust is magnetized according to the existing magnetic field.
• D)the seafloor never stops growing.

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Definitions:

Direct Labour Efficiency Variance

The difference between the actual hours worked and the standard hours expected to produce a certain number of units, multiplied by the standard labor rate.

Actual Production

The real and measurable output of goods or services from a production process or system.

Normal Production

The expected volume of output under standard operating conditions without external disruptions.

Standard Costing System

An accounting system that uses predetermined costs for products or services to assess the efficiency of operations by comparing them to actual costs incurred.