What Condition Is Necessary to See from Earth Eclipses of Stars

question 218

Multiple Choice

What condition is necessary to see from Earth eclipses of stars in binary star systems?

• A) The stars must have very similar surface temperatures, whatever the inclination of their orbital plane to the line of sight, to see a significant eclipse.
• B) The line of sight from Earth to the star system must be very close to perpendicular to the orbital plane of the stars.
• C) The line of sight from Earth to the star system must be in or very close to the orbital plane of the stars.
• D) One of the stars must be much bigger than the other so that it can hide its smaller companion when the orbital plane is at a large angle to the line of sight.

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Definitions:

Hypothalamus

An area in the brain situated beneath the thalamus, which is responsible for regulating the autonomic nervous system and the pituitary gland's function, overseeing the regulation of body temperature, thirst, hunger, and other systems that maintain bodily equilibrium.

Brain

The central organ of the nervous system, housed within the skull, responsible for complex functions such as thought, memory, emotion, and motor skills.

Body Temperature

The measure of the body's ability to generate and get rid of heat, indicating the balance of heat produced by metabolic activities and lost to the environment.

Basal Metabolic Rate (BMR)

The rate at which the body uses energy while at rest to maintain vital functions such as breathing and keeping warm.