Spiral Structure Can Be Triggered in a Disk Galaxy By

question 29

Multiple Choice

Spiral structure can be triggered in a disk galaxy by:

• A) the merger of close binary stars
• B) a supernova explosion
• C) the presence of an active nucleus
• D) the gravity of distant galaxies
• E) any disturbance to the disk

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Definitions:

Hypotheses

Propositions made as a basis for reasoning, without any assumption of their truth.

Two-way ANOVA

A statistical analysis tool used to explore the relationship between two categorical independent variables and a continuous dependent variable.

Interaction Effect

A phenomenon in statistical analysis where the effect of one variable on an outcome is different depending on the level or value of another variable.

Main Effect

In the context of statistical analysis, especially ANOVA, refers to the direct impact of an independent variable on a dependent variable.