Astronomers Call the Motion of a Star Across the Sky

question 12

Multiple Choice

Astronomers call the motion of a star across the sky (perpendicular to our line of sight) its

• A) radial velocity
• B) Doppler shift
• C) light travel time
• D) proper motion
• E) spectral type

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Definitions:

Experimental Philosophy

An approach within philosophy that uses empirical methods traditionally used in the sciences to research and test philosophical questions and concepts.

Experimental Method

The Experimental Method is a systematic and scientific approach to research in which the researcher manipulates one or more variables to determine their effect on a certain outcome.

Developmental Psychology

A branch of psychology that studies how people change over the lifespan, including physical, cognitive, social, intellectual, perceptual, personality, and emotional growth.

Social Psychology

The examination of the ways in which actual, imagined, or suggested presence of others impacts individuals' thoughts, emotions, and actions.