Home» Online Test » Astronomy » Solar System Online Test 0% Sorry, time's up. To complete the online test, please restart it. Created by Vikash chaudhary This 'Solar System Online Test' covers questions across all the topics related to our Solar System. Get fresh, 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 percentage of Earth's atmosphere is composed of nitrogen? a) Approximately 21% b) Approximately 50% c) Approximately 78% d) Approximately 90% 2 / 30 2. Which biome is characterized by tall grasses, few trees, and a distinct rainy and dry season? a) Desert b) Grassland (Prairie) c) Tropical Rainforest d) Tundra 3 / 30 3. What is the term for the process by which plants convert carbon dioxide and water into glucose and oxygen using sunlight? a) Photosynthesis b) Respiration c) Transpiration d) Decomposition 4 / 30 4. What was the last appearance of Halley's Comet before its most recent return in 1986? a) 1910 b) 1972 c) 1986 d) 1997 5 / 30 5. Which asteroid is known for its elongated shape and rapid rotation, resembling a spinning top? a) Ryugu b) Bennu c) Itokawa d) Mathilde 6 / 30 6. What is the most prominent feature of Neptune's atmosphere? a) Great Red Spot b) Hexagonal storm c) Great Dark Spot d) Polar vortex 7 / 30 7. What is the name of the spacecraft that successfully landed the Huygens probe on Saturn's largest moon, Titan, in 2005? a) Cassini b) New Horizons c) Juno d) Voyager 2 8 / 30 8. Which comet made a close approach to Earth in 1996, becoming widely visible to the naked eye? a) Halley's Comet b) Comet Hale-Bopp c) Comet Shoemaker-Levy 9 d) Comet Hyakutake 9 / 30 9. What is the name of the largest impact basin on Mars, covering a vast region of the planet's southern hemisphere? a) Hellas Planitia b) Valles Marineris c) Utopia Planitia d) Argyre Planitia 10 / 30 10. Which comet is known for its bright appearance and greenish coma due to the presence of cyanogen and diatomic carbon? a) Halley's Comet b) Comet Hale-Bopp c) Comet Shoemaker-Levy 9 d) Comet Hyakutake 11 / 30 11. Which space probe recently completed its mission by crashing into the surface of Comet 67P/Churyumov-Gerasimenko? a) New Horizons b) Juno c) Dawn d) Rosetta 12 / 30 12. What causes the extreme greenhouse effect on Venus? a) Thick atmosphere with high levels of carbon dioxide b) Rapid rotation of the planet c) Presence of water vapor d) Distance from the Sun 13 / 30 13. Which dwarf planet is notable for its elongated shape and rapid rotation? a) Eris b) Haumea c) Makemake d) Ceres 14 / 30 14. What is the name of the volcanic moon of Jupiter known for its intense volcanic activity? a) Europa b) Callisto c) Ganymede d) Io 15 / 30 15. Which meteorite is known for containing abundant organic compounds and is believed to be a remnant of the early Solar System? a) Allende b) Hoba c) Canyon Diablo d) Tunguska 16 / 30 16. According to Kepler's first law of planetary motion, what shape do planetary orbits trace around the Sun? a) Circular b) Elliptical c) Parabolic d) Hyperbolic 17 / 30 17. What is the name of a small rocky or metallic body in space that enters Earth's atmosphere and produces a streak of light? a) Meteorite b) Meteoroid c) Meteor d) Comet 18 / 30 18. What is the name of the region on Pluto characterized by vast plains of nitrogen ice? a) Sputnik Planitia b) Tombaugh Regio c) Lowell Regio d) Cthulhu Regio 19 / 30 19. What is the primary component of Ceres's surface? a) Rock b) Ice c) Iron d) Silicates 20 / 30 20. What term refers to the fuzzy, glowing region surrounding the nucleus of a comet? a) Nucleus b) Coma c) Tail d) Ionosphere 21 / 30 21. Which region of a comet's structure is primarily composed of water vapor, carbon dioxide, and other volatile substances? a) Nucleus b) Coma c) Tail d) Ionosphere 22 / 30 22. Which space telescope observes the universe in X-ray wavelengths, allowing scientists to study high-energy phenomena such as black holes and supernova remnants? a) Hubble Space Telescope b) James Webb Space Telescope c) Keck Observatory d) Chandra X-ray Observatory 23 / 30 23. How does the temperature on Mercury's surface vary? a) It is consistently hot b) It is consistently cold c) It varies widely between day and night d) It is mild and stable 24 / 30 24. What is the name of the largest feature on Pluto's surface, which is a heart-shaped region? a) Tombaugh Regio b) Sputnik Planitia c) Cthulhu Regio d) Lowell Regio 25 / 30 25. What is the Earth's mantle primarily composed of? a) Iron and nickel b) Silicon and oxygen c) Calcium carbonate d) Water and ice 26 / 30 26. What is unique about Triton's orbit around Neptune? a) It is highly eccentric b) It is retrograde c) It is synchronous d) It is equatorial 27 / 30 27. What is the name of the moon that was discovered to have a significant impact on Uranus's ring system? a) Oberon b) Miranda c) Ariel d) Cordelia 28 / 30 28. Which biome is characterized by long, cold winters and short, cool summers, with coniferous trees as the dominant vegetation? a) Taiga (Boreal Forest) b) Temperate Deciduous Forest c) Grassland (Prairie) d) Tundra 29 / 30 29. What is the name of the spacecraft launched by the European Space Agency (ESA) and the Japan Aerospace Exploration Agency (JAXA) to study Mercury? a) Rosetta b) BepiColombo c) Dawn d) Akatsuki 30 / 30 30. Which dwarf planet is considered the largest object in the Kuiper Belt? a) Pluto b) Haumea c) Eris d) Makemake Please provide accurate information so we can send your Achievement Certificate by mail. NameEmailPhone Number Your score isShare your achievement! 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