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 Galactic Halo in the Milky Way galaxy? a) A region of intense star formation b) The outer disk of the Milky Way c) A spherical region surrounding the central bulge d) The region containing the youngest stars in the galaxy 2 / 30 2. What is the approximate number of globular clusters in the Milky Way galaxy? a) 10 b) 50 c) 100 d) 150 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 is the Galactic Rotation Curve? a) A graphical representation of the Milky Way's orbit around the Sun b) A curve showing the distribution of stars and gas in the Milky Way's spiral arms c) A plot of the rotational velocity of stars and gas as a function of their distance from the galactic center d) A model describing the motion of galaxies in clusters under the influence of gravity 5 / 30 5. 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 6 / 30 6. 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 7 / 30 7. Which type of galaxy is the Milky Way classified as? a) Elliptical galaxy b) Spiral galaxy c) Irregular galaxy d) Lenticular galaxy 8 / 30 8. Which component of the Milky Way galaxy contains a supermassive black hole at its center? a) Halo b) Bulge c) Disk d) Spiral arms 9 / 30 9. What is a dark nebula? a) A nebula that emits its own light due to ionization by hot stars b) A nebula that reflects light from nearby stars c) A nebula composed mainly of dark matter d) A nebula that absorbs light from background stars 10 / 30 10. What type of galaxy is the Milky Way? a) Spiral b) Elliptical c) Irregular d) Lenticular 11 / 30 11. 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 12 / 30 12. What type of emissions are associated with Sagittarius A*? a) Visible light emissions b) Infrared emissions c) Radio and X-ray emissions d) Gamma-ray emissions 13 / 30 13. 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 14 / 30 14. What are giant molecular clouds (GMCs)? a) Regions of intense star formation within galaxies b) Massive clouds of interstellar gas and dust primarily composed of molecular hydrogen c) Concentrations of dark matter surrounding galaxies d) Protostellar nebulae in the early stages of star formation 15 / 30 15. 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 16 / 30 16. What happens to the stars during a galactic collision? a) Stars are destroyed in the collision b) Stars are flung out of the galaxies into intergalactic space c) Stars are gravitationally disrupted and redistributed within the merging galaxies d) Stars undergo nuclear fusion reactions, creating new elements 17 / 30 17. 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 18 / 30 18. What is stellar age? a) The time since a star's birth b) The time since a star entered the main sequence phase c) The time since a star exhausted its nuclear fuel d) The time since a star formed its planetary system 19 / 30 19. What are globular clusters in the context of the Milky Way? a) Regions of active star formation b) Groups of galaxies bound by gravity c) Spherical clusters of stars orbiting the Milky Way's core d) Dark matter halos surrounding dwarf galaxies 20 / 30 20. 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 21 / 30 21. What are protostars? a) Mature stars nearing the end of their life cycle b) Stars undergoing nuclear fusion reactions in their cores c) Young stellar objects in the early stages of star formation, before nuclear fusion ignition d) Low-mass stars that have exhausted their nuclear fuel 22 / 30 22. How does dark energy relate to the expansion of the universe and the Milky Way's motion? a) Dark energy accelerates the expansion of the universe and influences the Milky Way's motion within it. b) Dark energy slows down the expansion of the universe and counteracts the Milky Way's gravitational pull. c) Dark energy causes the Milky Way to rotate faster around its center. d) Dark energy has no effect on the Milky Way's motion or the expansion of the universe. 23 / 30 23. 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 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. What is the primary source of energy production in the Milky Way galaxy? a) Gravitational collapse b) Stellar winds c) Black hole accretion d) Nuclear fusion 26 / 30 26. 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 27 / 30 27. 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 28 / 30 28. 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 29 / 30 29. What role does the Milky Way play in the context of the cosmic web? a) The Milky Way connects different regions of the cosmic web, serving as a bridge between galaxies. b) The Milky Way emits radiation that illuminates the cosmic web, revealing its structure. c) The Milky Way is located at the center of the cosmic web, exerting gravitational influence on surrounding galaxies. d) The Milky Way is isolated from the cosmic web, with minimal interaction with other galaxies. 30 / 30 30. 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 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. 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