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The spectral class of the star Enif is K, while that of the Sun is G. Enif is cooler than the SunMeasurements indicate that a certain star has a very high intrinsic brightness (100,000 times as bright as our Sun) and yetis relatively cool (3500 K). This is because the star is very largeThe temperature of the outer atmosphere of the Sun is very hot, about 10^6 KSpectral lines are of particular importance in astronomy because each different element has a characteristic line spectrumSolar flares, the violent eruptive events on the Sun, occur most frequently in or above complex sunspot groupsThe rotation of the Sun is differential rotation, with the equator rotating faster than the polesAtoms in a thin, hot gas (such as a neon advertising sign), emit light at specific wavelengths or colors, the pattern depending on the elementNeutrinos particles/type of radiation will provide the most direct information on the energy generation processes that are occurring at the present time in the solar coreMagnetic fields breaking through the photosphere inhibit gas motion where the field is strong causes sunspotsThe number of sunspots on the Sun vary relatively regularly, with a period of about 11 yearsThe upper left end is the most massive stars to be found in the main sequence of a Hertzspring-Russell diagramHot, blue, main-sequence star has the surface temperature of 20,000 K and luminosity 5,000 times that of the SunTwo identical stars (having the same total light output) are located such that star A is at a distance of 5 light years and star B is at a distance of 25 light years. Star B will be 1/25 as bright as star AThe centers of the granular cells on the surface of the Sun are brighter than the edges of the cells because the centers arehotter than the edgesLuminosity and surface temperature are two physical parameters of stars that are plotted in the Hertzsprung-Russell diagramPhotons (radiative transport of energy) is the dominant mechanism by which energy is transported through the inner regions of the SunA red supergiant star is found to have a surface temperature of 2,500 K and a luminosity 100,000 times that of the Sun. Use the Hertzsprung-Russell diagram to determine its approximate radius, compared to that of the Sun. – About 1,000 times largerThe corona is the name of the outer atmosphere of the SunThe central region of a sunspot is about 1500 K cooler than the surrounding solar photosphere. The light from the sunspot will be redder and dimmer than the rest of the photosphereWhite dwarf is a star with surface temperature 10,000 K and luminosity 0.001 times that of the Sun according to the Hertzsprung-Russell diagramThe Sun is a little over 100 times larger than the Earth. So, if the Earth was the width of a paperclip, then the Sun would be tableObjects that emit light where to color of light depends on the temperature of the object is called a blackbody. Which of the following objects emits light based only on its temperature? --- The infrared light from a catIf the nail did not melt and it got hotter, its color would be more blueThe Sun has a surface temperature of 5,800 K. If we observe an object with a much higher temperature than the Sun, thenits peak color will be too blue for humans to see