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 is the name of the object orbiting Sagittarius A* that provided evidence of its massive nature? a) Hubble Space Telescope b) Spitzer Space Telescope c) Chandra X-ray Observatory d) Event Horizon Telescope 2 / 30 2. Which astronomical instrument has been crucial in mapping the structure of the Milky Way galaxy? a) Radio telescope b) X-ray telescope c) Infrared telescope d) Optical telescope 3 / 30 3. What is the primary composition of a white dwarf star? a) Hydrogen and helium b) Helium and carbon/oxygen c) Carbon and oxygen d) Iron and nickel 4 / 30 4. What evidence challenges the monolithic collapse theory? a) Observations of galaxies with irregular shapes and evidence of recent mergers b) The uniform distribution of galaxies across the universe c) The lack of dark matter in the outskirts of galaxy clusters d) The absence of interactions between neighboring galaxies 5 / 30 5. What is synchrotron radiation in the context of radio observations? a) Radio emissions produced by the collision of high-speed particles with interstellar gas b) Radio emissions produced by the interaction of cosmic rays with Earth's atmosphere c) Radio emissions produced by the acceleration of charged particles along magnetic field lines d) Radio emissions produced by nuclear fusion reactions within stars 6 / 30 6. Which type of stars are more commonly associated with open clusters in the Milky Way? a) Population I stars b) Population II stars c) Population III stars d) Variable stars 7 / 30 7. Which of the following is NOT a characteristic of spiral arms in galaxies? a) They are static and unchanging over time b) They exhibit regions of enhanced star formation c) They contain concentrations of interstellar gas and dust d) They are sites of gravitational interactions between stars 8 / 30 8. 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 9 / 30 9. What role do supernovae play in the evolution of the Milky Way galaxy? a) They enrich the interstellar medium with heavy elements and trigger the formation of new stars. b) They disrupt the structure of the galaxy and lead to the ejection of stars into intergalactic space. c) They cause the central black hole to grow in mass and influence the galaxy's dynamics. d) They accelerate the expansion of the galaxy's halo and contribute to its overall shape. 10 / 30 10. What is the significance of the Andromeda and Triangulum galaxies? a) They are the largest galaxies in the local group b) They are the only galaxies in the local group c) They are the closest galaxies to the Milky Way d) They are satellite galaxies of the Milky Way 11 / 30 11. 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) 12 / 30 12. What role does Sagittarius A* play in shaping the Milky Way galaxy? a) It drives the rotation of the Milky Way's spiral arms b) It regulates the rate of star formation in the galaxy c) It anchors the central bulge of the Milky Way and influences the orbits of nearby stars d) It emits powerful jets of radiation that shape the galaxy's morphology 13 / 30 13. How do astronomers determine the ages of stars in a galaxy? a) By analyzing their spectra to determine their chemical compositions b) By studying their positions in the galaxy and their motions c) By comparing their colors and brightness with theoretical models of stellar evolution d) By measuring their distances from Earth 14 / 30 14. What are the spiral arms of the Milky Way galaxy primarily composed of? a) Dark matter b) Neutron stars c) Interstellar gas and dust d) Planetary nebulae 15 / 30 15. 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 16 / 30 16. Approximately how many galaxies are there in the Local Group? a) 10 b) 50 c) 100 d) 1,000 17 / 30 17. What triggers the formation of stars within giant molecular clouds? a) Supernova explosions b) Collisions between galaxies c) Gravitational collapse of the cloud due to its own mass d) Radiation pressure from nearby stars 18 / 30 18. Which type of stars are the most common in the Milky Way galaxy? a) Red giants b) White dwarfs c) Main sequence stars d) Neutron stars 19 / 30 19. What is the approximate number of major spiral arms in the Milky Way? a) 2 b) 4 c) 6 d) 8 20 / 30 20. 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 21 / 30 21. 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 22 / 30 22. What is galactic chronology? a) The study of the formation and evolution of galaxies b) The study of the ages and lifecycles of stars within a galaxy c) The study of the ages of different components of a galaxy and their relation to its formation history d) The study of the distribution of stars within a galaxy 23 / 30 23. What is the typical orbital motion of stars within the Milky Way? a) Circular orbits around the galactic center b) Elliptical orbits around the galactic center c) Spiral orbits along the Milky Way's spiral arms d) Radial orbits perpendicular to the galactic plane 24 / 30 24. What are radio 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 25 / 30 25. Approximately how many stars are estimated to be in the Milky Way galaxy? a) 10 million b) 100 million c) 100 billion d) 1 trillion 26 / 30 26. What is the name of the Milky Way's central bulge? a) Sagittarius A* b) Orion Nebula c) Perseus Arm d) Andromeda Galaxy 27 / 30 27. 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 28 / 30 28. 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 29 / 30 29. 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 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. Send feedback Buy Milky Way Galaxy MCQ PDF for Offline Study Share the above MCQs: Click to share on Facebook (Opens in new window) Facebook Click to share on WhatsApp (Opens in new window) WhatsApp Click to share on X (Opens in new window) X Click to share on LinkedIn (Opens in new window) LinkedIn Click to share on Reddit (Opens in new window) Reddit
