A White Dwarf Star Is at What Stage of Its

question 135

Multiple Choice

A white dwarf star is at what stage of its evolution?

• A) protostar phase, just after formation, beginning to generate energy by nuclear fusion
• B) main-sequence phase, "middle-aged," generating energy by fusion of hydrogen to helium
• C) post-supernova stage, after the explosion of a star
• D) very late phase of evolution, no longer generating energy

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Definitions:

Developing

A descriptor for countries or regions undergoing economic, industrial, and social progress, often with rapid growth and improvement in living standards.

Hypothesis

A proposed explanation made on the basis of limited evidence as a starting point for further investigation.

Human Development

The multidisciplinary study of how people change and how they remain the same over time.

Piaget

Jean Piaget was a Swiss psychologist known for his pioneering work in child development, particularly his theory of cognitive development that describes how children construct a mental model of the world.