What Causes the Characteristic Blue Color of a Reflection Nebula

question 87

Multiple Choice

What causes the characteristic blue color of a reflection nebula?

• A) Scattering of starlight from dust grains within the nebula
• B) Thermal (blackbody)radiation from dust grains heated to high temperatures by stellar UV
• C) Electrons dropping from n = 3 to n = 2 in hydrogen atoms
• D) Electrons dropping from n = 2 to n = 1 in hydrogen atoms

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Definitions:

Standard Prices

Predetermined prices used in budgeting and cost control procedures for valuing transactions and measuring cost variances.

Direct Materials Quantity Variances

The variance that occurs when the actual quantity of materials used in production differs from the expected quantity.

Absorption Costing

An accounting method that includes all manufacturing costs - direct materials, direct labor, and both variable and fixed manufacturing overhead - in the cost of a product.

ABC

A method of identifying and assigning costs to specific activities to improve cost accuracy and managerial decision-making.