It Is Unlikely That Planets near Stars Much More Massive

question 56

Multiple Choice

It is unlikely that planets near stars much more massive than our Sun would develop life because

• A) planets would have to be too close to these cool stars in order to be sufficiently warm for life to evolve,and they would become tidally linked,resulting in no night and day.
• B) there would be no region around the star where UV,visible,and IR light intensities would be suitable for the evolution of life.
• C) no moon would form around a planet near such a star,and a moon is considered essential for the evolution of life because of tidal variations.
• D) these stars would have evolved to red giant or even supernova stages before life could evolve.

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Definitions:

Principal

A person who authorizes an agent to act on her or his behalf and subject to her or his control.

Independent Contractor

An individual who provides goods or services to another entity under terms specified in a contract or within a freelance arrangement, not as an employee.

Expressly Authorized

Granted clear and definite permission or authority to do something, usually in a specific manner.

Master

An outdated term signifying an individual who has the right to control the physical conduct of a servant or employee.