Light from Some Stars Shows an Apparent Change in Frequency

question 36

Multiple Choice

Light from some stars shows an apparent change in frequency because of:

• A)interference
• B)refraction by layers of air
• C)diffraction
• D)reflection
• E)relative motion

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Definitions:

Emerging Adulthood

A phase of the life span between adolescence and full-fledged adulthood which encompasses late teens through twenties, characterized by exploration and instability.

Attention

The cognitive process of selectively concentrating on one aspect of the environment while ignoring other stimuli.

Distractions

Anything that diverts an individual's attention from their desired focus, often leading to a reduction in performance or productivity.

Short-Term Memory

Limited-capacity memory system in which information is usually retained for up to 30 seconds, assuming there is no rehearsal of the information. Using rehearsal, individuals can keep the information in short-term memory longer.