Many Disk Galaxies, Such as Andromeda and the Milky Way

question 35

Multiple Choice

Many disk galaxies, such as Andromeda and the Milky Way, are thought to have extended halos of dark matter because the disk circular orbital speed is observed to ____________ increasing distances from the disk center.

• A)stay constant with
• B)decrease with
• C)be totally absent at

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Definitions:

Diencephalon

A brain area (consisting of the mammillary bodies, thalamus, and hypothalamus) that plays a key role in transforming short-term to long-term memory, among other functions.

Short-Term Memory

The ability to keep a limited quantity of data actively accessible for a brief duration.

Brain Changes

Alterations in the brain's structure or function, which can result from injury, disease, psychological conditions, or ongoing development.

Cerebellum

An area of the brain that coordinates movement in the body and perhaps helps control a person’s ability to shift attention rapidly.