Geography | Fortune Question of the Day | Day 14 скачать в хорошем качестве

Geography | Fortune Question of the Day | Day 14

Solution: (d) Difficulty Level: Medium Micro Topic: Revolution of the Earth Solving Strategy: Understand the impact of axial tilt on day-night cycle, solstices/equinoxes, and seasons. Eliminate options using Earth-Sun geometry concepts. Option 1 is CORRECT. The current variation in day and night length across latitudes is caused by the 23.5° axial tilt of the Earth relative to the plane of its orbit (the ecliptic). Due to this tilt, different regions receive varying solar exposure throughout the year. However, if Earth’s axis were perpendicular (i.e., 90° to the ecliptic), the Sun’s rays would strike every latitude symmetrically across the year. Consequently, every place on Earth would receive exactly 12 hours of daylight and 12 hours of darkness each day regardless of the season or latitude except the extreme poles. Option 2 is CORRECT. Solstices and equinoxes are astronomical phenomena that occur only because of Earth’s axial tilt. Solstices mark the dates when the Sun appears at its maximum angular distance from the Equator over the Tropic of Cancer in June (Summer Solstice) and over the Tropic of Capricorn in December (Winter Solstice). Equinoxes occur when the Earth’s axis is tilted neither toward nor away from the Sun, resulting in equal day and night globally. If the axis were perpendicular, the Sun would always appear to be directly over the equator at noon, and its declination would not shift north or south. Thus, there would be no shifting solar declination, and therefore no solstices or equinoxes could occur. Option 3 is CORRECT. Earth’s axial tilt is the primary reason for seasons. As the planet orbits the Sun, different hemispheres tilt toward or away from it, altering the midday Sun’s altitude, solar angle, and day length. These variations cause seasonal temperature shifts. Without this tilt, sunlight would strike all regions uniformly year-round, eliminating seasonal contrasts especially in higher latitudes and resulting in a relatively uniform global climate. Source: Chapter 1, The Earth and the Universe, Certificate physical and Human Geography by G C Leong, Page no: 5, 6 🚀 Fortune IAS — Question of the Day Sharpen your Prelims preparation with one powerful question every day along with a crisp concept video. Why follow this series? ✨ Daily Prelims practice ✨ Quick, clear video explanations ✨ Strong concept building in minutes ✨ Builds consistency for UPSC success 📌 New Question Daily at 9:00 AM 📞 Admissions & Enquiries For admission details (Online & Offline): 📱 Call: 9495015888 / 8138940888 🌐 Apply: https://www.fortuneias.com/pcm/ 📧 Email: fortuneiasacademy@gmail.com 🔗 Website:https://www.fortuneias.com/ 📢 Join our UPSC Telegram community for daily updates: https://t.me/fortuneias #fortuneias #fortunequestionoftheday #upscexam #upsctoppers #keralaias #upscprelims #upscmains #civilservices #ias #ips #prelims2026 #upscpreparation