The Rotation Curve of a Galaxy Is a Graph Showing

question 7

Multiple Choice

The rotation curve of a galaxy is a graph showing the galaxy's speed of rotation at different distances from the center.The observed rotation curve in the outer parts of a typical large spiral galaxy

• A) decreases suddenly to zero at the outer edge of the visible galaxy.
• B) decreases smoothly with increasing distance from the center,following a Keplerian curve.
• C) is quite flat (roughly the same speed at all distances).
• D) increases drastically with increasing distance from the center,as shown by the spiral arms.

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Definitions:

Seeing Stars

A colloquial term often used to describe the visual phenomenon experienced after a sudden impact to the head, characterized by seeing flashing lights.

Parietal Cortex

A region of the brain located in the parietal lobe, involved in processing sensory information from various parts of the body, understanding spatial orientation, and managing language and calculation.

Temporal Lobes

Regions of the brain located on either side of the brain, involved in processing auditory information and encoding memory.

Prefrontal Cortex

The front part of the frontal lobe, involved in complex behaviors such as planning, decision making, and moderating social behavior.