Period: your answers to questions 8 theough 11 on the flowchart below and on you
ID: 121737 • Letter: P
Question
Period: your answers to questions 8 theough 11 on the flowchart below and on your knowledge of Earth science. The flowchant represents possible pathways in the evolution of stars Black hole Neutron star 8. Cirele the relative surface temperature and relative luminosity of the main sequence star Sirius compared with the surface temperature and luminosity of the Sun Relative rface treperabune of Sertus cirele one we higher the same Relative minosity of Sts inck n beater the 9. Identify the nuclear process that occurs when lighter elements in a star combine to form 10. State the name of one star labeled on the Characteristics of Shars graph in the Earth Science 11. Based on this flowchart, identify the characteristic of a main sequence star that determines whether elements, producing the stars radiant energy Reference Tables that may become either a black hole or neutron star the star becomes a giant or a supergiant Base your answers to questions 12 through 15 on the diagram below and on your knowledge of Earth science. The diagram represents the Moon's orbit around Earth as North Pole (NP). Letter A represents one position of the Moon in its orbit viewed from space above Earth's s Orbir Equator Sun's rays Earth Not drawe to scae 12. Describe the actual shape of the Moon's oebit 13. On the diagram below, shade the portion of the Moon that is in darkness as viewed from New York State when the Moon is at position A 14. State the number of days that it takes the Moon to orbit Earth once. 15. On the diagram above, place an X on the Moon's orbit to indicate the position of the Moon when a solar eclipse would be observed from Earth.Explanation / Answer
8. Surface temperature of Sirius is 9940 K whereas the surface temperature of Sun is 5778 K. Therefore relative surface temperature of Sirius is higher than that of Sun. Also the luminosity of Sirius is 25 times greater than that of sun.
9. Nuclear fusion is a process in which two or more atomic nuclei combine to form different atomic nuclei and subatomic particles i.e neutrons and protons. Nuclear fusion is a process that gives energy to the main sequence stars or other high magnitude stars. Stars burn and releases a large amounts of energy when the hydrogen fuses to form helium and other heavier elements like carbon. The process of nuclear fusion starts when two hydrogen atoms collide and produces two subatomic particles like neutrinos and positrons, an atom of helium and energy. If the star is of average mass there will be sufficient pressure to fuse larger atoms and forms heavier elements as heavy as iron. If the star is extremely massive it will die in a violent explosion known as supernova which releases a large amount of energy that even heavier elements than iron can form by nuclear fusion.
10. Neutron stars are formed in the supernova explosion by the collapse of the stellar core which is too heavy to become a white dwarf. Their mass is generally 10-29 solar masses before the collapse. They are the smallest and densest star known. They are typically very hot and have surface temperatures of about 600000 K. eg pulsars are magnetized rotating neutron stars which emit beam radiation.
Black holes are the objects of extreme density and have the gravitational pulling force so strong that even light cannot pass through it. They are formed by the explosion of supernova explosion of extremely massive stars at the end of their lifecycle accompanied by gamma ray bursts
11. Whether the main sequence star will form giant or supergiant star it depends on the mass of the star. If the protostar(forming star) is more massive main sequence star than it will form supergiant. Whereas if it is less massive main sequence star than it will form giant.