- 18 Even Though We Cannot View The Interior Of The Sun Astronomers Have Deduced Models For The Solar Interior The Diag 1 (67.82 KiB) Viewed 13 times
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- 18 Even Though We Cannot View The Interior Of The Sun Astronomers Have Deduced Models For The Solar Interior The Diag 3 (96.13 KiB) Viewed 13 times
- 18 Even Though We Cannot View The Interior Of The Sun Astronomers Have Deduced Models For The Solar Interior The Diag 4 (64.54 KiB) Viewed 13 times
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- 18 Even Though We Cannot View The Interior Of The Sun Astronomers Have Deduced Models For The Solar Interior The Diag 8 (91.9 KiB) Viewed 13 times
18. Even though we cannot view the interior of the sun, astronomers have deduced models for the solar interior. The diagram below is a cross-sectional model of the regions of the sun's interior. Complete the following parts a k relating to the solar interior. - 2 0 0 0 0 0
a. One important law of nature scientists have discovered is called the Ideal Gas Law. The Ideal Gas Law states that the pressure of a gas increases as the tem- perature and the density increase. Since the deeper layers of the sun must be at a higher pressure to support more "weight" of the outer layers, do we expect the temp- erature and density to increase, decrease, or remain constant as we go into the sun? b. If the interior pressure of the sun were to become greater than the "weight" of the outer regions, what would happen to the sun?
c. On the cross-sectional model to the left label the convective zone, core, photo- sphere, and radiation zone of the sun. d. The arrows pointing toward the center of the sun indicate the direction of the grav- itational force due to the "weight" of the outer regions above the core. If an interior force does not exist to counteract the "weight", what would eventually happen to the sun?
e. As the size of the sun changes as describ- ed in part d., what will happen to the temperature and pressure in the core of the sun? f. Scientific laws explain that energy flows from regions of higher temperature to regions of lower temperature. What simple observation indicates that the interior of the sun is hotter than the exterior? g. By studying the limb darkening effect, astronomers have determined that the photosphere temperature increases 9° K every kilometer we go into the sun. Using the temperature change of 9° K for each kilometer and the radius of the sun, cal- culate the approximate temperature at the center of the sun. of the
e. As the size of the sun changes as describ- ed in part d., what will happen to the temperature and pressure in the core of the sun? f. Scientific laws explain that energy flows from regions of higher temperature to regions of lower temperature. What simple observation indicates that the interior of the sun is hotter than the exterior? g. By studying the limb darkening effect, astronomers have determined that the photosphere temperature increases 9° K every kilometer we go into the sun. Using the temperature change of 9° K for each kilometer and the radius of the sun, cal- culate the approximate temperature at the center of the sun. of the
k. As a result of the thermonuclear reactions occuring in the core of the sun, particles called neutrinos are emitted and pass freely through the sun and into outer space. Dr. Davis of Brookhaven National Laboratory has developed a technique that should detect neutrinos from the sun by their interaction with chemicals in his experi- ment. After allowing for experimental errors, his measurements indicate that the number of neutrinos emitted from the sun is 5 to 10 times less than predicted by theory. Suggest two reasons for the dis- crepancy between the observation and the theoretical prediction.
k. As a result of the thermonuclear reactions occuring in the core of the sun, particles called neutrinos are emitted and pass freely through the sun and into outer space. Dr. Davis of Brookhaven National Laboratory has developed a technique that should detect neutrinos from the sun by their interaction with chemicals in his experi- ment. After allowing for experimental errors, his measurements indicate that the number of neutrinos emitted from the sun is 5 to 10 times less than predicted by theory. Suggest two reasons for the dis- crepancy between the observation and the theoretical prediction.