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. Approximately how many galaxies are there in the Local Group? a) 10 b) 50 c) 100 d) 1,000 2 / 30 2. 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 3 / 30 3. 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 4 / 30 4. What is the mass of the supermassive black hole Sagittarius A*? a) A few thousand solar masses b) A few million solar masses c) A few billion solar masses d) A few trillion solar masses 5 / 30 5. What is the name of the Milky Way's central bulge? a) Sagittarius A* b) Orion Nebula c) Perseus Arm d) Andromeda Galaxy 6 / 30 6. 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 7 / 30 7. What role does dark matter play in the cosmic web? a) Dark matter forms the filaments and nodes of the cosmic web, guiding the distribution of galaxies. b) Dark matter absorbs light, creating voids in the cosmic web. c) Dark matter emits radiation, connecting galaxies in the cosmic web. d) Dark matter causes galaxies to collide and merge in the cosmic web. 8 / 30 8. Which type of galaxy interaction is the Milky Way currently experiencing? a) Galaxy merger with the Andromeda Galaxy b) Close encounter with the Triangulum Galaxy c) Tidal interaction with a satellite dwarf galaxy d) Isolated from significant galactic interactions 9 / 30 9. What is the approximate thickness of the Milky Way's galactic disk? a) 100 light-years b) 1,000 light-years c) 10,000 light-years d) 100,000 light-years 10 / 30 10. 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 11 / 30 11. What is the name of the phenomenon where stars orbit the center of the Milky Way at different speeds depending on their distance from the center? a) Galactic drift b) Stellar rotation c) Galactic shear d) Galactic differential rotation 12 / 30 12. What is the Andromeda Galaxy (M31)? a) A spiral galaxy located in the constellation Andromeda, about 2.5 million light-years from Earth b) A dwarf galaxy orbiting the Milky Way c) A globular cluster within the Milky Way galaxy d) A satellite galaxy of the Triangulum Galaxy (M33) 13 / 30 13. What is the significance of Population II stars in understanding the early universe? a) They are remnants of the first stars formed after the Big Bang b) They provide insights into the process of nucleosynthesis in early galaxies c) They reveal the presence of dark matter in the galactic halo d) They offer clues about the formation and evolution of galaxy clusters 14 / 30 14. 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 15 / 30 15. What is a nebula? a) A cluster of stars within a galaxy b) A cloud of interstellar gas and dust c) A type of galaxy containing mostly dark matter d) A region of active star formation 16 / 30 16. What is the significance of studying globular clusters? a) They provide insights into the process of planet formation b) They contain young, massive stars suitable for studying stellar evolution c) They offer clues about the formation and early evolution of galaxies d) They serve as indicators of the current rate of star formation in the Milky Way 17 / 30 17. What type of galaxy is the Milky Way? a) Spiral b) Elliptical c) Irregular d) Lenticular 18 / 30 18. What is the estimated distance between the Milky Way and the Andromeda Galaxy? a) 100,000 light-years b) 1 million light-years c) 2.5 million light-years d) 5 million light-years 19 / 30 19. What is the Galactic Coordinate System? a) A system of coordinates used to locate objects within the Milky Way galaxy b) A system of coordinates used to map the positions of stars in the universe c) A system of coordinates based on the celestial equator and the ecliptic plane d) A system of coordinates used exclusively for radio astronomy observations 20 / 30 20. What is the name of the group of galaxies that includes the Milky Way? a) Local Group b) Virgo Supercluster c) Hydra-Centaurus Supercluster d) Pisces-Cetus Supercluster 21 / 30 21. Which type of stars are the remnants of supernova explosions? a) Main sequence stars b) Red giants c) White dwarfs d) Neutron stars 22 / 30 22. What are some observable consequences of galactic collisions? a) Formation of new stars and star clusters b) Depletion of gas and cessation of star formation c) Destruction of existing galaxies and loss of stellar populations d) All of the above 23 / 30 23. Which phenomenon is responsible for the appearance of the Milky Way as a band of light across the night sky? a) Galactic collision b) Stellar explosion c) Galactic rotation d) Light pollution 24 / 30 24. What happens to the gas and dust during a galactic collision? a) Gas and dust are completely consumed by nuclear fusion reactions b) Gas and dust are ejected into intergalactic space, leaving galaxies devoid of star-forming material c) Gas and dust are compressed and triggered to undergo rapid star formation d) Gas and dust are gravitationally disrupted and can trigger intense star formation and the formation of new stellar populations 25 / 30 25. What causes the radio emissions from Sagittarius A*? a) Radioactive decay of surrounding stellar material b) Synchrotron radiation from charged particles accelerated by the black hole's magnetic field c) Nuclear fusion reactions within the black hole's accretion disk d) Gravitational lensing effects on background radio sources 26 / 30 26. What is the name of the process through which the Milky Way interacts with other galaxies? a) Galactic merging b) Stellar cannibalism c) Galactic collision d) Intergalactic attraction 27 / 30 27. What are some ethical considerations regarding human colonization of space? a) Preservation of extraterrestrial environments, prevention of contamination, and respect for indigenous life b) Exploitation of resources, geopolitical dominance, and cultural imperialism c) Inequality of access to space, violation of international law, and militarization of space d) Genetic engineering of humans, manipulation of ecosystems, and surveillance of populations 28 / 30 28. What phenomenon causes the Milky Way's spiral arms to appear? a) Gravitational lensing b) Stellar oscillation c) Differential rotation d) Galactic accretion 29 / 30 29. What is the significance of the Milky Way's position within the Local Group? a) It is the largest galaxy in the Local Group b) It is located at the center of the Local Group c) It is gravitationally bound to the Andromeda Galaxy d) It influences the formation of galaxies within the Local Group 30 / 30 30. What are the main goals of the Gaia mission? a) To search for signs of extraterrestrial life in the Milky Way b) To study the formation and evolution of galaxies beyond the Milky Way c) To create a detailed 3D map of the Milky Way galaxy and its stellar populations d) To explore the dynamics of black holes at the centers of galaxies 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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