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. Which moon of Jupiter is the most volcanically active body in the Solar System, with hundreds of active volcanoes? a) Io b) Europa c) Ganymede d) Callisto 2 / 30 2. 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 3 / 30 3. Which layer of the Earth's atmosphere contains most of the weather phenomena? a) Troposphere b) Stratosphere c) Mesosphere d) Thermosphere 4 / 30 4. 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 5 / 30 5. Which space probe was the first to fly by Jupiter, Saturn, Uranus, and Neptune, providing detailed data on these gas giants and their moons? a) Voyager 1 b) Voyager 2 c) Pioneer 10 d) Pioneer 11 6 / 30 6. What is the name of the moon of Makemake discovered in 2015? a) S/2015 (136472) 1 b) Weywot c) MK2 d) Hiiaka 7 / 30 7. Which layer of the Earth's atmosphere is closest to the planet's surface? a) Troposphere b) Stratosphere c) Mesosphere d) Thermosphere 8 / 30 8. What is the name of the region beyond the orbit of Neptune where a vast collection of icy bodies, including Pluto, reside? a) Oort Cloud b) Kuiper Belt c) Asteroid Belt d) Scattered Disc 9 / 30 9. What is the name of the bright, elongated stream of gas and dust extending from the coma of a comet? a) Nucleus b) Coma c) Tail d) Ionosphere 10 / 30 10. Which spacecraft was the first to successfully land humans on the Moon? a) Apollo 11 b) Apollo 13 c) Apollo 15 d) Apollo 17 11 / 30 11. Which moon of Jupiter has a thin atmosphere composed mostly of carbon dioxide, with surface pressures less than one-thousandth of Earth's? a) Io b) Europa c) Ganymede d) Callisto 12 / 30 12. What is the name of the region on Pluto characterized by dark, heavily cratered terrain? a) Sputnik Planitia b) Tombaugh Regio c) Lowell Regio d) Cthulhu Regio 13 / 30 13. What is the approximate diameter of Uranus? a) 30,000 kilometers (18,600 miles) b) 50,000 kilometers (31,000 miles) c) 70,000 kilometers (43,500 miles) d) 90,000 kilometers (56,000 miles) 14 / 30 14. What is the name of the massive, swirling storm system observed at Saturn's south pole? a) Saturn's Hexagon b) Venus' Vortex c) Saturn's North Polar Vortex d) Saturn's South Polar Vortex 15 / 30 15. Which moon of Mars is closer to the planet? a) Phobos b) Deimos c) Titan d) Ganymede 16 / 30 16. Which space telescope is designed to search for Earth-like planets orbiting other stars and is scheduled for launch in the 2020s? a) Hubble Space Telescope b) James Webb Space Telescope c) TESS (Transiting Exoplanet Survey Satellite) d) WFIRST (Wide Field Infrared Survey Telescope) 17 / 30 17. How many moons does Mars have? a) 1 b) 2 c) 3 d) 4 18 / 30 18. Which moon of Uranus is known for its heavily cratered surface and bright, icy terrain? a) Oberon b) Miranda c) Ariel d) Umbriel 19 / 30 19. What is the phenomenon called when the solar wind compresses Earth's magnetosphere on the side facing the Sun? a) Magnetotail b) Bow Shock c) Magnetopause d) Solar Flare 20 / 30 20. Which comet is known for its exceptionally long tail and was visible to the naked eye for several months in 1997? a) Halley's Comet b) Comet Hale-Bopp c) Comet Shoemaker-Levy 9 d) Comet Hyakutake 21 / 30 21. During which solar event are auroras most likely to be observed? a) Solar eclipse b) Lunar eclipse c) Solar flare d) New moon 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. What phenomenon on Venus is characterized by a slow retrograde rotation, meaning it rotates in the opposite direction of most planets in the Solar System? a) Axial tilt b) Retrograde rotation c) Synodic period d) Orbital resonance 24 / 30 24. Which ground-based observatory is operated by the European Southern Observatory (ESO) and consists of four individual telescopes located in Chile? a) Hubble Space Telescope b) James Webb Space Telescope c) Keck Observatory d) Very Large Telescope (VLT) 25 / 30 25. Which dwarf planet was the first to be discovered beyond Pluto's orbit in the Kuiper Belt? a) Eris b) Haumea c) Makemake d) Ceres 26 / 30 26. What is the approximate diameter of Jupiter's Great Red Spot? a) 10,000 kilometers (6,200 miles) b) 20,000 kilometers (12,400 miles) c) 30,000 kilometers (18,600 miles) d) 40,000 kilometers (24,800 miles) 27 / 30 27. What is the name of the prominent gap in Saturn's rings, caused by the gravitational influence of the moon Mimas? a) Encke Gap b) Cassini Division c) Keeler Gap d) Roche Division 28 / 30 28. What is the name of the space telescope launched by NASA in 1990, which has provided breathtaking images and groundbreaking discoveries in astronomy? a) Hubble Space Telescope b) James Webb Space Telescope c) Spitzer Space Telescope d) Chandra X-ray Observatory 29 / 30 29. What type of rock is formed from the cooling and solidification of magma or lava? a) Sedimentary b) Metamorphic c) Igneous d) None of the above 30 / 30 30. Which celestial body exhibits significant tidal forces from both Jupiter and Saturn, resulting in its elongated shape and active cryovolcanism? a) Io b) Europa c) Enceladus d) Titan 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 Solar System MCQ PDF for Offline Study