A Red Giant Star Is Found to Be Orbiting an Unseen

question 76

Multiple Choice

A red giant star is found to be orbiting an unseen object with a short orbital period.By measuring the speed at which it orbits,astronomers deduce that the object has a mass of 10M_⨀ This object is probably a __________ because __________.

• A)black hole;the giant star is massive and could only be in orbit about something even more massive
• B)black hole;its mass is too large to be a neutron star or a white dwarf
• C)neutron star;any supernova that would have made a black hole would have destroyed the red giant
• D)M-dwarf star;only such stars would be faint enough to go unseen in this system
• E)black hole;most red giants orbit neutron stars,and neutron stars can turn into black holes

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Definitions:

Assimilation

A cognitive process where new information is integrated into existing schemas or concepts.

Accommodation

Adjustments or adaptations made to fit or suit conditions, often relating to living arrangements or visual perception.

Generations

Groups of individuals, born and living at about the same time, who experience similar societal events and cultural shifts that can influence their values and behaviors.

Socio-emotional Selectivity Theory

A theory that explains how individuals prioritize their social contacts based on their perceived remaining time in life, focusing more on emotionally satisfying relationships as they age.