The Star Regulus, in the Constellation Leo, Appears Brighter Through

question 172

Multiple Choice

The star Regulus, in the constellation Leo, appears brighter through a blue filter than it does through a yellow filter. Suppose that a second star is found that has the same brightness as Regulus through the blue filter but is brighter than Regulus through the yellow filter. From this information, one can say conclusively that the second star has

• A) a higher temperature.
• B) the same temperature but a higher luminosity.
• C) the same temperature but a lower luminosity.
• D) a lower temperature.

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Definitions:

Organ Systems

Groups of organs that work together to perform complex functions in an organism.

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A community of living organisms and their physical environment interacting as a system.

Physical Environment

The external surroundings and conditions in which an organism lives, including both natural and man-made factors.

Community

An interacting group of various species living in a common location.