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. Which famous nebula is an example of a reflection nebula? a) Orion Nebula b) Crab Nebula c) Pleiades Nebula d) Witch Head Nebula 2 / 30 2. What are some challenges associated with visual observations of the Milky Way? a) Absorption of visible light by interstellar dust and gas b) Scattering of visible light by Earth's atmosphere c) Limited resolution and sensitivity of optical telescopes d) All of the above 3 / 30 3. 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 4 / 30 4. Which component of the Milky Way galaxy contains a supermassive black hole at its center? a) Halo b) Bulge c) Disk d) Spiral arms 5 / 30 5. 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 6 / 30 6. Which famous nebula is an example of an emission nebula? a) Eagle Nebula b) Horsehead Nebula c) Rosette Nebula d) Trifid Nebula 7 / 30 7. What is a population II star? a) A young star with high metallicity b) A middle-aged star with low metallicity c) An old star with high metallicity d) An old star with low metallicity 8 / 30 8. What is the approximate age range of Population II stars in the Milky Way? a) 1-3 billion years b) 4-8 billion years c) 10-13 billion years d) 14-16 billion years 9 / 30 9. 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 10 / 30 10. What role do giant molecular clouds play in star formation? a) They provide the raw materials (gas and dust) from which stars form b) They emit intense radiation that triggers nuclear fusion reactions in nearby stars c) They repel nearby stars, preventing them from forming d) They cause existing stars to undergo gravitational collapse and form new stars 11 / 30 11. 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. 12 / 30 12. Which type of stars are more likely to be found in regions of active star formation in the Milky Way? a) Population I stars b) Population II stars c) Population III stars d) Variable stars 13 / 30 13. What is the size of the event horizon of Sagittarius A*? a) 1 astronomical unit b) 10 astronomical units c) 100 astronomical units d) 1,000 astronomical units 14 / 30 14. 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 15 / 30 15. What can X-ray emissions from Sagittarius A* reveal about its properties? a) Its mass and size b) Its distance from Earth c) Its composition d) Its rotation speed 16 / 30 16. 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 17 / 30 17. 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 18 / 30 18. 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 19 / 30 19. 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 20 / 30 20. 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 21 / 30 21. What role might private companies play in human colonization efforts? a) They could lead colonization efforts independently of government agencies. b) They could collaborate with governments on joint colonization missions. c) They could provide technology and infrastructure for colonization projects. d) All of the above 22 / 30 22. What is the significance of measuring stellar parallax? a) It allows astronomers to determine the distances to nearby stars b) It reveals the true brightness of stars c) It provides information about the compositions of stars d) It enables the detection of exoplanets around distant stars 23 / 30 23. 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 24 / 30 24. What advantage do radio observations offer for studying the Milky Way? a) Radio waves penetrate interstellar dust more effectively than visible light b) Radio telescopes have higher resolution than optical telescopes c) Radio emissions provide more detailed information about the temperature of stars d) Radio observations are less affected by Earth's atmosphere than visible light observations 25 / 30 25. 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 26 / 30 26. 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 27 / 30 27. 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 28 / 30 28. What are tidal tails in the context of galactic collisions? a) Streams of gas ejected from galaxies due to nuclear fusion reactions b) Streams of stars and gas pulled out of galaxies by gravitational forces during a collision c) Regions of intense star formation triggered by galactic collisions d) Energetic particles emitted by black holes at the centers of merging galaxies 29 / 30 29. 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 30 / 30 30. 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 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 Share the above MCQs:Click to share on Facebook (Opens in new window)Click to share on WhatsApp (Opens in new window)Click to share on X (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Reddit (Opens in new window)
