The Hubble Space Telescope Has Recently Strengthened the Case for a Subsurface

question 54

Multiple Choice

The Hubble Space Telescope has recently strengthened the case for a subsurface ocean on Ganymede by observing

• A) changes in time of auroras surrounding the moon
• B) a thin atmosphere of water vapor above the surface
• C) salts on its surface
• D) jets of water erupting from the surface

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Definitions:

Invalid Premise

A statement or assumption that is incorrect or flawed, which can undermine the validity of an argument.

Categorical Syllogisms

A kind of syllogism where the argument is based on the inclusion and exclusion of categories or groups.

Possible Figures

In syllogistic logic, refers to the different valid arrangements of the major, minor, and middle terms in syllogisms.

Categorical Syllogisms

A kind of logical argument that involves two premises and a conclusion, each statement beginning with "all", "no", or "some", referring to the relationships between categories.