Astronomers Can Tell Whether a Star Is Approaching or Receding

question 18

Multiple Choice

Astronomers can tell whether a star is approaching or receding from Earth by

• A)its temperature.
• B)its change in temperature.
• C)its absorption spectra.
• D)the Doppler effect.
• E)all of these

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Definitions:

Psychoanalytic Term

Refers to concepts and terminology associated with psychoanalysis, a theoretical framework and therapeutic approach to understand and treat psychological disorders, developed by Sigmund Freud.

Cardiovascular Disease

a general term for conditions affecting the heart and blood vessels, often related to atherosclerosis (buildup of plaque inside the arteries) and can lead to heart attacks, strokes, and other health issues.

Sleep Apnea

A health issue marked by breaks in breathing or instances of light breathing while sleeping.

Snoring

A loud breathing sound occurring during sleep when the flow of air through the mouth and nose is physically obstructed.