Jupiter Contains a Number of Small Moons That Are Thought

question 75

Multiple Choice

Jupiter contains a number of small moons that are thought to be captured comets or material ejected by collisions with larger objects. What is the evidence for this theory?

• A) Spacecraft have sampled them, and they are known to be comets.
• B) Analyses from spacecraft show they have compositions completely different than Jupiter or its moons.
• C) They are too big to have been formed during planetary accretion.
• D) Their orbits are highly elliptical, off the plane of the ecliptic, and many are retrograde, which is unlikely for satellite formed during planetary accretion.

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Definitions:

Middle Sizing Handle

A graphical handle found in the center of an object's side in graphical interfaces, allowing for adjustment in size along one dimension.

Aspect Ratio

The proportional relationship between the width and height of an image or display screen.

Select Button

A control element in a graphical user interface that allows users to choose or highlight one or more options from a list.

Select Row

The action of highlighting or marking an entire row in a spreadsheet or table for further operations.