The Mechanism of the "Greenhouse Effect," Which Has Resulted in Very

question 143

Multiple Choice

The mechanism of the "greenhouse effect," which has resulted in very high temperatures on the surface of Venus (and moderate temperatures on Earth) , can be described as solar

• A) UV and visible radiation heating the planet surface, the infrared emissions of which are trapped by carbon dioxide in the atmosphere.
• B) UV and visible radiation entering the clouds and triggering chemical reactions in the carbon dioxide and sulfur compounds, the released energy then heating the atmosphere.
• C) UV and visible radiation being absorbed by the carbon dioxide of the atmosphere, thereby heating it.
• D) infrared radiation heating the planet surface that then emits visible and UV radiation that is trapped by carbon dioxide in the atmosphere.

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Definitions:

Variable Overhead Efficiency Variance

The difference between the actual variable overhead incurred and the expected variable overhead based on the standard cost, attributed to efficiency in using resources.

Labor Efficiency Variance

The difference between the actual labor hours used and the standard hours expected for the production level achieved.

Materials Quantity Variance

The difference between the actual quantity of materials used in production and the standard quantity expected, multiplied by the standard cost per unit of material.

Standard Material

The predetermined quantity and cost of materials expected to be used in producing a unit of product, used as a benchmark for cost control.