Home» Online Test » Astronomy » Milky Way Galaxy Online Test 0% Sorry, time's up. To complete the online test, please restart it. Created by Vikash chaudhary This 'Milky Way Galaxy Online Test' covers questions across all the topics related to the Galaxies. Get New Questions in Each Attempt Total Questions: 30 Time Allotted: 30 minutes Passing Score: 50% Randomization: Yes Certificate: Yes Do not refresh the page! 👍 All the best! 1 / 30 1. What observational technique is commonly used to study Sagittarius A*? a) Radio astronomy b) Optical astronomy c) Infrared astronomy d) X-ray astronomy 2 / 30 2. What is the primary source of energy production in red giant stars? a) Fusion of hydrogen into helium b) Fusion of helium into heavier elements c) Nuclear reactions involving carbon and oxygen d) Gravitational collapse 3 / 30 3. What is the name of the galaxy nearest to the Milky Way? a) Andromeda Galaxy b) Large Magellanic Cloud c) Small Magellanic Cloud d) Triangulum Galaxy 4 / 30 4. What role does the distribution of mass within the Milky Way play in shaping the orbital motion of stars? a) It has no significant effect on the orbital motion of stars b) It determines the direction of stars' motion but not their orbital speeds c) It influences the orbital speeds and trajectories of stars d) It causes stars to collide with each other 5 / 30 5. What is the defining characteristic of main sequence stars? a) They are the most massive stars in the galaxy b) They are in the final stages of their life cycle c) They fuse hydrogen into helium in their cores d) They are surrounded by protoplanetary disks 6 / 30 6. What is the approximate number of stars in the Milky Way galaxy? a) 10 million b) 100 million c) 1 billion d) 100 billion 7 / 30 7. What effect does Sagittarius A* have on nearby stars? a) It causes them to emit gamma-ray bursts b) It accelerates them to relativistic speeds c) It induces gravitational tides and orbital precession d) It triggers supernova explosions 8 / 30 8. What is the primary distinguishing feature of the Galactic Bulge? a) It contains predominantly young stars b) It is composed mainly of spiral arms c) It has a flattened, disk-like shape d) It contains a dense concentration of old stars and a supermassive black hole 9 / 30 9. What is the connection between the Milky Way and dark matter? a) Dark matter is composed of stars and gas within the Milky Way. b) The Milky Way is surrounded by a halo of dark matter, which influences its gravitational dynamics. c) Dark matter is responsible for the formation of the Milky Way's spiral arms. d) The Milky Way emits dark matter particles into space. 10 / 30 10. What is the significance of studying Sagittarius A*? a) It provides insights into the formation and evolution of supermassive black holes b) It helps astronomers detect and study exoplanets in nearby star systems c) It offers clues about the formation of planetary systems within the Milky Way d) It reveals the processes responsible for the formation of galactic spiral arms 11 / 30 11. What are globular clusters? a) Regions of active star formation in the Milky Way b) Spherical clusters of stars orbiting the supermassive black hole at the galactic center c) Dense concentrations of stars located in the spiral arms of the Milky Way d) Spherical clusters of tens of thousands to millions of stars, found mainly in the Galactic Halo 12 / 30 12. What is a galactic collision? a) A collision between two galaxies b) A collision between stars within a galaxy c) A collision between a galaxy and a supermassive black hole d) A collision between a galaxy and a planetary system 13 / 30 13. What is the primary source of energy generation in the core of the Milky Way galaxy? a) Nuclear fusion b) Gravitational contraction c) Dark matter annihilation d) Black hole accretion 14 / 30 14. Which of the following is a characteristic of main sequence stars? a) They are in a state of rapid expansion b) They have exhausted their nuclear fuel c) They occupy a diagonal band on the Hertzsprung-Russell diagram d) They emit primarily infrared radiation 15 / 30 15. What is the approximate diameter of the Milky Way galaxy? a) 10,000 light-years b) 50,000 light-years c) 100,000 light-years d) 200,000 light-years 16 / 30 16. What role do globular clusters play in the formation of the Galactic Halo? a) They contribute to the ongoing process of star formation in the halo b) They provide a reservoir of young stars for the halo population c) They serve as building blocks from which the halo formed early in the galaxy's history d) They help regulate the rotation speed of the galactic disk 17 / 30 17. Which of the following methods is used to map the spiral structure of the Milky Way? a) Radio astronomy b) Optical astronomy c) X-ray astronomy d) Infrared astronomy 18 / 30 18. What are visual observations of the Milky Way? a) Observations made using telescopes sensitive to visible light b) Observations made using radio telescopes to detect radio emissions c) Observations made using infrared telescopes to penetrate interstellar dust d) Observations made using ultraviolet telescopes to study hot, young stars 19 / 30 19. What causes the X-ray emissions from Sagittarius A*? a) Nuclear fusion reactions within the black hole's core b) Accretion of matter onto the black hole's event horizon c) Collision of stars within the black hole's accretion disk d) Reflection of X-rays from nearby stars 20 / 30 20. What is the Galactic Neighborhood? a) The region surrounding the center of the Milky Way galaxy b) The area of space within the Milky Way galaxy where our solar system is located c) The collection of galaxies that are gravitationally bound to the Milky Way d) The local group of galaxies that includes the Milky Way, Andromeda, and Triangulum galaxies 21 / 30 21. Which type of galaxy is the Milky Way classified as? a) Elliptical galaxy b) Spiral galaxy c) Irregular galaxy d) Lenticular galaxy 22 / 30 22. What is the role of dark matter in the orbital motion of stars within the Milky Way? a) Dark matter accelerates stars to speeds exceeding the speed of light b) Dark matter causes stars to deviate from their expected orbital paths c) Dark matter provides additional gravitational pull, affecting the orbital dynamics of stars d) Dark matter emits radiation that influences the motion of stars 23 / 30 23. What is the approximate diameter of the Milky Way galaxy? a) 10,000 light-years b) 100,000 light-years c) 1 million light-years d) 10 million light-years 24 / 30 24. What type of radiation is emitted by Sagittarius A*? a) Gamma rays b) X-rays c) Infrared radiation d) Radio waves 25 / 30 25. What is the ultimate fate of galaxies involved in a galactic collision? a) They are completely destroyed, leaving behind only supermassive black holes b) They merge together to form larger, more massive galaxies c) They are ejected from galaxy clusters into intergalactic space d) They undergo rapid expansion, leading to the formation of new galaxies 26 / 30 26. What phenomenon causes the Milky Way's spiral arms to appear? a) Gravitational lensing b) Stellar oscillation c) Differential rotation d) Galactic accretion 27 / 30 27. What is the name of the satellite galaxies orbiting the Milky Way? a) Magellanic Clouds b) Orion Nebula c) Pleiades Cluster d) Triangulum Galaxy 28 / 30 28. What distinguishes the monolithic collapse theory from the hierarchical formation theory? a) The speed of galaxy formation b) The importance of dark matter in galaxy evolution c) The role of mergers in galaxy growth d) The distribution of galaxies in the universe 29 / 30 29. What does the Galactic Rotation Curve reveal about the Milky Way's structure? a) The Milky Way has a uniform distribution of mass throughout its disk b) The Milky Way's rotation is dominated by the gravitational influence of its central black hole c) The Milky Way's rotation velocity remains constant at all distances from the galactic center d) The Milky Way's outer regions rotate faster than expected based on visible mass, indicating the presence of dark matter 30 / 30 30. What is the age range of stars in globular clusters? a) Few million years b) Few billion years c) Few trillion years d) Few hundred thousand years Please provide accurate information so we can send your Achievement Certificate by mail. NameEmailPhone Number Your score is Share your achievement! LinkedIn Facebook Twitter 0% Restart Test Please provide your feedback. Thank you for your valuable feedback. 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