What Do We Mean When We Say That the Rotation

question 36

Multiple Choice

What do we mean when we say that the rotation curve for a spiral galaxy is "flat"?

• A)The disk of a spiral galaxy is quite flat rather than spherical like the halo.
• B)The amount of light emitted by stars at different distances is about the same throughout the galaxy.
• C)Gas clouds orbiting far from the galactic center have approximately the same orbital speed as gas clouds located further inward.
• D)All the galaxy's mass is concentrated in its flat, gaseous disk.

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Definitions:

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Efforts to create a workplace that welcomes, respects, and values diversity among employees.

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