Why Do Astronomers Often Measure the Visible-Light Apparent Brightness Instead

question 44

Multiple Choice

Why do astronomers often measure the visible-light apparent brightness instead of the total apparent brightness of a star?

• A)All stars put out most of their light in the visible range of the spectrum.
• B)In order to measure the total apparent brightness of a star,you must measure its brightness in all wavelengths,and this is difficult to do.The only wavelengths you can measure from the surface of Earth are visible and radio wavelengths.
• C)Most stars do not put out light in other ranges of the spectrum.
• D)They are identical for most stars.
• E)Astronomers are lazy.

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Definitions:

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The growth and change in mental capabilities and cognitive functions, including learning, reasoning, problem-solving, and decision-making.

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The physical and emotional context provided by a person's living situation, which can significantly influence their well-being.

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An indicator of where a person or family stands in terms of economic and social status, determined by their income, level of education, and type of job.

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The first stage of Piaget's theory of cognitive development, occurring from birth to about 2 years of age, where infants learn about the world through their senses and actions.