A Medium-Mass Star Evolves into a Red Giant Because ____

question 4

Multiple Choice

A medium-mass star evolves into a red giant because ____.

• A) the core expands as new fusion products collect there
• B) the surface of the star becomes cooler
• C) energy from hydrogen shell burning and helium fusion forces the outer layer to expand
• D) the surface of the star becomes hotter
• E) increased stellar winds carry large amounts of material off of the surface of the star

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Definitions:

Estimate

An approximation or educated guess of a certain quantity based on available data.

Population

The entire group or set of items or individuals from which samples may be drawn for statistical analysis.

Statistical Inference

The process of making predictions or decisions about a population based on sample data.

Reliability

The degree to which an assessment tool produces stable and consistent results.