A White Dwarf Star, as It Evolves, Undergoes Which of These

question 114

Multiple Choice

A white dwarf star, as it evolves, undergoes which of these changes?

• A) Its temperature remains constant, but its radius and therefore its luminosity decrease.
• B) Luminosity and size decrease while its temperature remains constant.
• C) It shrinks in size, the resulting release of gravitational energy keeping both luminosity and temperature constant.
• D) Luminosity and temperature decrease.

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Definitions:

Dependent Variable

The variable in an experiment or study that is affected by changes in the independent variable, and which researchers aim to measure or predict.

Independent Variable

A variable in an experiment or study that is manipulated or categorized to observe its effect on a dependent variable.

Coefficient Of Correlation

A measure that calculates the strength and direction of a linear relationship between two variables, represented as 'r'.

Dependent Variable

In an experiment or model, it is the variable being tested and measured, which is expected to change as a result of changes in the independent variable(s).