You Observe a Red Star and a Blue Star and Are

question 95

Multiple Choice

You observe a red star and a blue star and are able to determine that they are the same size.Which star has a higher surface temperature, and which star is more luminous?

• A) The red star has a higher surface temperature and is more luminous.
• B) The red star has a higher surface temperature, and the blue star is more luminous.
• C) The blue star has a higher surface temperature and is more luminous.
• D) The blue star has a higher surface temperature, and the red star is more luminous.
• E) They have the same luminosities and temperatures.

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A device or technique used to attempt to determine whether a person is telling the truth by measuring physiological responses.

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An instrument that measures and records several physiological indicators such as blood pressure, pulse, respiration, and skin conductivity while a subject is asked questions, purported to indicate lying or truthfulness.

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