The Redshift of the Galaxies Is Correctly Interpreted As

question 99

Multiple Choice

The redshift of the galaxies is correctly interpreted as:

• A)a Doppler shift due to the random motions of galaxies in space.
• B)an aging of light as gravity weakens with time.
• C)space itself is expanding with time, so the photons are stretched while they travel throughspace.
• D)placing our Galaxy near the center of the Local Group.
• E)the differences in temperatures and star formation in old and young galaxies.

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Definitions:

External Stimulus

An event or factor outside the body that influences an individual's physiological or psychological response.

Drive-Reduction

A psychological theory that posits the reduction of physiological needs drives behavior, aiming to reduce the state of tension or arousal caused by unmet needs.

Homeostasis

The process by which a living organism or cell maintains stable internal conditions despite changes in its external environment.

Set-Point Theory

The hypothesis that the body regulates its weight and energy levels around a specific baseline, determined by genetics and environmental factors.