Why Did the First Planetesimals Form at the Outer Edge

question 33

Multiple Choice

Why did the first planetesimals form at the outer edge of the nebular disk?

• A) The smaller particles were gathered at the outer edge.
• B) The heat of fusion was more favorable there.
• C) Cooler temperatures favored condensation there.
• D) The planetary accretion gravity spun the planetesimal particles to the outer edge.

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Definitions:

Tolerance

A progressive decrease in responsiveness to a drug with continued use.

Extinction

The gradual weakening and disappearance of a conditioned response tendency.

Abstinence Syndrome

A group of symptoms that occur upon sudden withdrawal from substances to which the body has become dependent, including drugs or alcohol.

Withdrawal Illness

Withdrawal illness refers to the physical and mental symptoms experienced by individuals who cease or reduce the intake of addictive substances to which they have become dependent.