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 mission provided the first detailed radar maps of Venus's surface? a) Mariner 2 b) Magellan c) Pioneer Venus d) Venera 7 2 / 30 2. Which moon of Neptune is known for its retrograde orbit, meaning it orbits the planet in the opposite direction of Neptune's rotation? a) Triton b) Nereid c) Proteus d) Larissa 3 / 30 3. Which meteorite is composed mainly of iron and nickel and often exhibits a characteristic Widmanstätten pattern upon etching? a) Allende b) Hoba c) Canyon Diablo d) Tunguska 4 / 30 4. Which spacecraft conducted a close-up study of Ceres, revealing bright spots and other intriguing features on its surface? a) Voyager 1 b) Voyager 2 c) Dawn d) New Horizons 5 / 30 5. What is the name of the tallest mountain on the Moon, located near the southwestern edge of the Imbrium Basin? a) Mount Everest b) Mons Huygens c) Mount Hadley d) Mons Mons 6 / 30 6. What is the process by which plants and animals naturally adapt to their environment over time? a) Evolution b) Photosynthesis c) Transpiration d) Respiration 7 / 30 7. What is the name of the hexagonal cloud pattern observed at Saturn's north pole? a) Saturn's Hexagon b) Jupiter's Great Red Spot c) Venus' Vortex d) Uranus' Rings 8 / 30 8. What is the biosphere? a) The layer of the Earth's atmosphere where living organisms exist b) The rocky outer layer of the Earth c) The layer of the Earth's mantle containing molten rock d) The zone on Earth where life exists, including land, water, and air 9 / 30 9. What is the approximate length of one day on Venus (one complete rotation)? a) 24 hours b) 58.6 Earth days c) 243 Earth days d) 365 Earth days 10 / 30 10. What is the phenomenon called where Mercury exhibits phases similar to the Moon and Venus? a) Lunar phases b) Solar phases c) Orbital phases d) Planetary phases 11 / 30 11. What is the name of the dark, vortical storm system observed at Neptune's equator? a) Great Dark Spot b) Great Red Spot c) North Equatorial Belt d) South Equatorial Belt 12 / 30 12. Which space probe carried a golden record containing sounds and images of Earth, intended as a message to potential extraterrestrial civilizations? a) Voyager 1 b) Voyager 2 c) Pioneer 10 d) Pioneer 11 13 / 30 13. 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 14 / 30 14. Which of the following is NOT a greenhouse gas? a) Carbon dioxide b) Methane c) Nitrogen d) Water vapor 15 / 30 15. What is the Earth's mantle primarily composed of? a) Iron and nickel b) Silicon and oxygen c) Calcium carbonate d) Water and ice 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. 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 18 / 30 18. Which layer of the Earth's interior is divided into the outer and inner layers? a) Crust b) Mantle c) Core d) Lithosphere 19 / 30 19. What is the name of the largest known object in the asteroid belt between Mars and Jupiter? a) Eris b) Haumea c) Makemake d) Ceres 20 / 30 20. Which process is responsible for the movement of tectonic plates? a) Erosion b) Subduction c) Convection currents in the mantle d) Volcanic eruptions 21 / 30 21. What is the central solid core of a comet called? a) Nucleus b) Coma c) Tail d) Ionosphere 22 / 30 22. 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 23 / 30 23. What is the primary component of Jupiter's atmosphere? a) Oxygen b) Nitrogen c) Helium d) Carbon dioxide 24 / 30 24. Which spacecraft provided the first close-up images and data of Uranus and its moons? a) Voyager 1 b) Voyager 2 c) Cassini d) New Horizons 25 / 30 25. Which moon of Neptune is the largest and most notable, with a retrograde orbit and active geysers spewing nitrogen gas and icy particles? a) Titan b) Enceladus c) Miranda d) Triton 26 / 30 26. Which type of tail of a comet is composed of ionized gas and is pushed away from the Sun by the solar wind? a) Dust tail b) Ion tail c) Plasma tail d) Gas tail 27 / 30 27. What is the potential significance of recent discoveries of subsurface water ice on Mars? a) Evidence of ancient oceans b) Indication of present-day habitability c) Evidence of past volcanic activity d) Indication of geological faults 28 / 30 28. Which dwarf planet is known for its reddish surface color, likely due to the presence of organic compounds? a) Eris b) Haumea c) Makemake d) Ceres 29 / 30 29. Which moon of Jupiter is thought to have a subsurface ocean beneath its icy crust, potentially harboring conditions suitable for life? a) Io b) Europa c) Ganymede d) Callisto 30 / 30 30. Which space probe was the first to visit Jupiter and later became the first human-made object to leave the Solar System? a) Voyager 1 b) Voyager 2 c) Pioneer 10 d) Pioneer 11 Please provide accurate information so we can send your Achievement Certificate by mail. NameEmailPhone Number Your score isShare your achievement! LinkedIn Facebook 0% Restart Test Please provide your feedback. Thank you for your valuable feedback. Send feedback Buy Solar System MCQ PDF for Offline Study