An Astronomer Observing Certain Regions of the Sun Through a Spectrometer

question 182

Multiple Choice

An astronomer observing certain regions of the Sun through a spectrometer notices that the spectral lines emitted from these regions are split into two or more components. What does the astronomer conclude about these regions from his observations?

• A) The regions contain fast-moving gas.
• B) The regions are very hot.
• C) The regions contain strong gravitational fields.
• D) The regions contain strong magnetic fields.

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Definitions:

Confidence Level

The probability, expressed as a percentage, that the result of an experiment or study will fall within a specified range of values.

Confidence Interval

An interval of values, calculated from samples, that probably includes an undetermined population statistic, at a designated level of certainty.

Ordinal Data

A type of categorical statistical data type that involves order or ranking of the values but not the exact difference between them.

Weight

A measure of the gravitational force exerted on an object, typically measured in pounds or kilograms.