The Position of an Absorption or Emission Line Is Useful

question 51

Multiple Choice

The position of an absorption or emission line is useful in determining the ____.

• A) temperature of an object
• B) distance to an object
• C) chemical composition of an object
• D) motion of an object across the observer's line of sight
• E) motion of an object toward or away from the observer

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Definitions:

Field

An area of study, work, or interest; a domain.

Cross-Sectional Slice

An image that shows a particular section of the body or object as if it has been cut across to reveal internal features.

Computed Tomography (CT) Scan

An imaging method that uses x-rays to create detailed pictures of the inside of the body, showing more detail than a standard x-ray.

Reconstructs

To build or form something again after it has been damaged or destroyed, often used in the context of surgery or historical restoration.