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Motions of the earth | Geography Practice Questions | UPSC IAS 

Motions of the earth | Geography Practice Questions | UPSC IAS 

Motions of the earth | Geography Practice Questions | UPSC IAS  Q1. Consider the following statements/निम्नलिखित कथनों पर विचार करें
  1. Earth rotates along its axis from east to west/पृथ्वी अपने अक्ष पर पूर्व से पश्चिम की ओर गति करती है |
  2. Days and nights occur due to rotation of the earth/दिन और रात का निर्माण पृथ्वी के घूर्णन से होता है |
  3. Earth’s axis is tilted at an angle of 66.5o on its orbital plane/पृथ्वी कक्षीय समतल पर 66.5o  के कोण पर झुकी है |
Which of the above statement/s is/are correct/ इनमे से कौन सा कथन सही है ?
  • Only 3
  • 1 and 3  
  • 2 and 3
  • 1,2,3
[showhide type=”links1″ more_text=”Show Answer” less_text=”Hide Answer”] Ans. C is correct.
  • Statement 1 is not correct Earth rotates along its axis from west to east.
  • Statement 2 is correct Days and nights occur due to rotation of the earth.
  • Statement 3 is correct Earth’s axis is tilted at an angle of 66.5o on its orbital plane.
[/showhide] Q2. Consider the following statements/निम्नलिखित कथनों पर विचार करें
  1. The circle of illumination is at an angle of 23.5o to the earth’s axis/प्रदीप्ति वृत्त तथा पृथ्वी के अक्ष के बीच 23.5o का कोण है |
  2. The position when earth is positioned at maximum distance from the Sun, is called Perihelion/वह स्थिति जब पृथ्वी सूर्य से अधिकतम दूरी पर स्थित हो तो यह उप-सौर कहलाती है |
  3. The earth moves around the sun in an spherical orbit/पृथ्वी सूर्य के चारों  ओर एक गोलाकार कक्ष में गति करती है |
Which of the above statement/s is/are correct/इनमे से कौन सा कथन सही है ?
  • Only 1
  • 1 and 3  
  • 2 and 3
  • 1,2,3
[showhide type=”links2″ more_text=”Show Answer” less_text=”Hide Answer”] Ans. A is correct.
  • Statement 1 is correct The circle of illumination is at an angle of 23.5o to the earth’s axis.
  • Statement 2 is not correct The position when earth is positioned at maximum distance from the Sun, is called Aphelion
  • Statement 3 is not correct The earth moves around the sun in an elliptical orbit.
[/showhide] Q3. Consider the following statements/निम्नलिखित कथनों पर विचार करें
  1. Revolution of earth takes 365¼ days to revolve around the sun/सूर्य के परिक्रमण में पृथ्वी को 365¼ दिन का समय लगता है |
  2. The imaginary line on which the earth moves around the sun is called its orbit/वह काल्पनिक रेखा जिस पर पृथ्वी सूर्य के चारों ओर गति करती है वह उसकी कक्षा कहलाती है |
  3. On 21st June, the rays of the sun fall directly on the Tropic of Cancer/21 जून को सूर्य की किरणे सीधे कर्क रेखा पर गिरती है |  
Which of the above statement/s is/are correct/इनमे से कौन सा कथन सही है ?
  • Only 1
  • 1 and 3  
  • 2 and 3
  • 1,2,3
[showhide type=”links3″ more_text=”Show Answer” less_text=”Hide Answer”] Ans. D is correct.
  • Statement 1 is correct  Revolution of earth takes 365¼ days to revolve around the sun.
  • Statement 2 is correct The imaginary line on which the earth moves around the sun is called its orbit.
  • Statement 3 is correct   On 21st June, the northern hemisphere is tilted towards the sun. The rays of the sun fall directly on the Tropic of Cancer.
[/showhide] Q4. Consider the following statements/निम्नलिखित कथनों पर विचार करें  
  1. In winter solstice, it is winter in the southern hemisphere with shorter days and longer nights/ दक्षिणायन में, दक्षिणी गोलार्ध में छोटे  दिनों और लम्बी रातों के साथ सर्दियां होती है |
  2. On 21st March and September 23rd, the whole earth experiences equal days and equal nights./21 मार्च और 23 सितंबर को पूरी पृथ्वी पर दिन और रात बराबर होते है |
  3. While the revolution is responsible for day and night on earth, its rotation is responsible for changes in seasons/दिन और रात के निर्माण के लिए परिक्रमण उत्तरदायी है जबकि ऋतुओं का निर्माण घूर्णन के कारण हुआ है |
Which of the above statement/s is/are correct/इनमे से कौन सा कथन सही है ?
  • Only 1
  • 1 and 3  
  • Only 2
  • 1,2,3
[showhide type=”links4″ more_text=”Show Answer” less_text=”Hide Answer”] Ans. C is correct.
  • Statement 1 is not correct   In winter solstice, it is summer in the southern hemisphere with longer days and shorter nights.
  • Statement 2 is correct On 21st March and September 23rd, direct rays of the sun fall on the equator. At this position, neither of the poles is tilted towards the sun; so, the whole earth experiences equal days and equal nights. This is called an equinox.
  • Statement 3 is not correct While the rotation is responsible for day and night on earth, its revolution is responsible for changes in seasons.
[/showhide] Q5. Consider the following statements/निम्नलिखित कथनों पर विचार करें   
  1. Refraction is stronger during the morning and the evening time when the sun’s rays are slant/सुबह और शाम को सूर्य  के तिरछी होने के कारण अपवर्तन अधिक होता है |
  2. Temperature rises with increasing latitude because the energy received per unit area increases from equator to poles./अक्षांश में वृद्धि के साथ तापमान में भी वृद्धि होती है क्योंकि एकांक समय किसी क्षेत्र द्वारा प्राप्त ऊर्जा की मात्रा  विषुवत रेखा से ध्रुवों की तरफ चलने से बढ़ती है |
  3. Regions beyond the Arctic circle receive sunlight all day long in summer because Earth’s axis at the north pole is tilted towards the sun in summer/उत्तरी ध्रुव वृत से परे के क्षेत्र  गर्मियों में पूरे दिन सूर्य के प्रकाश को प्राप्त करते हैं  क्योंकि उत्तरी ध्रुव पर पृथ्वी का अक्ष सूर्य की ओर झुका हुआ है |
 Which of the above statement/s is/are correct/इनमे से कौन सा कथन सही है ?
  • Only 1
  • 1 and 3  
  • Only 2
  • 1,2,3
[showhide type=”links5″ more_text=”Show Answer” less_text=”Hide Answer”] Ans. B is correct.
  • Statement 1 is correct  Refraction is particularly stronger during the morning and the evening time when the sun’s rays are slant.
  • Statement 2 is not correct Temperature falls with increasing latitude because the energy received per unit area decreases from equator to poles.
  • Statement 3 is correct Regions beyond the Arctic circle receive sunlight all day long in summer because Earth’s axis at the north pole is tilted towards the sun in summer.
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