In Comparing the Fraunhofer Lines with Light Emitted by Elements

question 93

Multiple Choice

In comparing the Fraunhofer lines with light emitted by elements in a flame, Bunsen and Kirchhoff demonstrated that _______.

• A)atoms emit and absorb electromagnetic radiation at characteristic wavelengths.
• B)the solar spectrum is continuous.
• C)alkali metals absorb and emit the same wavelengths.
• D)nuclear reactions are responsible for the absorption and emission of electromagnetic radiation.
• E)the sun's composition is changing over time.

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Definitions:

Defensiveness

A psychological reaction that occurs when an individual perceives a threat to their self-esteem or self-concept, often leading to a barrier in communication.

Beck Depression Inventory II

A 21-item self-reporting questionnaire used to assess the severity of depression in individuals.

Symptoms of Depression

Clinical signs such as persistent sadness, loss of interest in activities, changes in weight or sleep, and feelings of worthlessness, which indicate depression.

Standard Deviation

A measure of the amount of variation or dispersion of a set of values, indicating how much the values deviate from the mean.