Galileo Proposed That the Sun Is a Rotating Sphere After

question 69

Multiple Choice

Galileo proposed that the Sun is a rotating sphere after he ____.

• A) timed a full rotation of the Sun's equator
• B) observed sunspots move across the surface of the Sun
• C) measured different spectral lines of emission on different days
• D) noted how the Sun rose in the east and set in the west
• E) discovered the parallax of the Sun

---

Definitions:

Interaction Term

In regression analysis, it's a variable created from the product of two or more variables to assess how the simultaneous influence of those variables on the outcome differs from the sum of their individual effects.

Dependent Variable

The variable in an experiment that is expected to change as a result of changes made to the independent variable.

First-Order Polynomial Model

A mathematical model of a linear relationship between the independent variable and the dependent variable, characterized by having no exponents higher than one.

Predictor Variable

A variable used in statistical models to predict or influence the outcomes of a dependent variable.