Which of These Is NOT a Source of the Shock

question 94

Multiple Choice

Which of these is NOT a source of the shock waves that lead to protostars?

• A)radiation from the OB stars in emission nebulae
• B)expanding Herbig-Haro objects
• C)expanding planetary nebula shells
• D)violent supernovae explosions
• E)collisions between galaxies

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Definitions:

Institution of Slavery

A social and economic system in which individuals are owned as property by others, deprived of personal freedom, and forced to perform labor or services.

Proslavery

A stance or ideology that advocates for or supports the practice of slavery, justifying it on economic, moral, or social grounds.

Anti-Slavery

Opposition to the practice of slavery and the slave trade, advocating for the abolition of slavery and the emancipation of enslaved people.

Secretary of War Henry Knox

A leading military officer of the Continental Army during the American Revolution who later served as the first United States Secretary of War under President George Washington.