Latitude, Longitude and Standard Time - Practice Test 2

Attempt the quiz above first, then review every question with its correct answer and a short explanation below.

1. Q1.The Prime Meridian passes through:

   • A.New York
   • B.Greenwich (London)✓ Correct Answer
   • C.Paris
   • D.Delhi

   Explanation: The Prime Meridian passes through Greenwich, where the British Royal Observatory is located.

2. Q2.What is the value of the Prime Meridian?

   • A.90° E
   • B.180°
   • C.0° longitude✓ Correct Answer
   • D.0° latitude

   Explanation: The Prime Meridian represents 0° longitude.

3. Q3.Unlike parallels of latitude, all meridians are:

   • A.Of unequal length
   • B.Of equal length✓ Correct Answer
   • C.Circles
   • D.Points

   Explanation: All meridians are of equal length (semicircles).

4. Q4.The distance between longitudes decreases towards the:

   • A.Equator
   • B.Poles✓ Correct Answer
   • C.Tropic of Cancer
   • D.Prime Meridian

   Explanation: The distance between longitudes is max at the equator and becomes zero at the poles.

5. Q5.How many longitudes are there in total?

   • A.180
   • B.360✓ Correct Answer
   • C.90
   • D.181

   Explanation: There are 180 longitudes to the East and 180 to the West, totaling 360.

6. Q6.The longitude of a place is followed by the letter:

   • A.N or S
   • B.E or W✓ Correct Answer
   • C.A or B
   • D.X or Y

   Explanation: Longitudes are marked East (E) or West (W) from the Prime Meridian.

7. Q7.180° East and 180° West meridians are:

   • A.Two different lines
   • B.The same line✓ Correct Answer
   • C.Parallel lines
   • D.Perpendicular lines

   Explanation: They overlap to form a single line, roughly corresponding to the International Date Line.

8. Q8.Grid is a network of:

   • A.Parallels of latitudes and Meridians of longitudes✓ Correct Answer
   • B.Tropic of Cancer and Capricorn
   • C.North Pole and South Pole
   • D.Equator and Prime Meridian only

   Explanation: The criss-crossing lines of latitudes and longitudes form a Grid.

9. Q9.To locate a place precisely on Earth, we need its:

   • A.Only Latitude
   • B.Only Longitude
   • C.Both Latitude and Longitude✓ Correct Answer
   • D.Distance from Delhi

   Explanation: The intersection of latitude and longitude gives the exact location.

10. Q10.The best means of measuring time is by the movement of:

    • A.Watches
    • B.Earth, Moon, and Planets✓ Correct Answer
    • C.Water flow
    • D.Sand

    Explanation: Celestial bodies like the Earth, Moon, and planets provide the basis for timekeeping.

11. Q11.Local time is determined by the shadow cast by the:

    • A.Moon
    • B.Sun✓ Correct Answer
    • C.Stars
    • D.Clouds

    Explanation: Historically, the sun's shadow (shortest at noon) determined local time.

12. Q12.As the Earth rotates from West to East, places East of Greenwich will be:

    • A.Behind Greenwich time
    • B.Ahead of Greenwich time✓ Correct Answer
    • C.Same as Greenwich time
    • D.Random

    Explanation: Places east see the sunrise first, so they are ahead in time.

13. Q13.The Earth rotates 360° in about:

    • A.12 hours
    • B.24 hours✓ Correct Answer
    • C.365 days
    • D.1 hour

    Explanation: Earth completes one rotation (360°) in 24 hours.

14. Q14.How many degrees does Earth rotate in 1 hour?

    • A.10°
    • B.15°✓ Correct Answer
    • C.20°
    • D.25°

    Explanation: 360° / 24 hours = 15° per hour.

15. Q15.How many minutes does it take for Earth to rotate 1 degree?

    • A.1 minute
    • B.4 minutes✓ Correct Answer
    • C.15 minutes
    • D.60 minutes

    Explanation: 60 minutes / 15° = 4 minutes per degree.

16. Q16.If it is 12 noon at Greenwich, what is the time at 15° East?

    • A.11:00 AM
    • B.1:00 PM✓ Correct Answer
    • C.12:00 PM
    • D.2:00 PM

    Explanation: 15° East is 1 hour ahead. 12 + 1 = 1:00 PM.

17. Q17.If it is 12 noon at Greenwich, what is the time at 15° West?

    • A.11:00 AM✓ Correct Answer
    • B.1:00 PM
    • C.10:00 AM
    • D.12:00 AM

    Explanation: 15° West is 1 hour behind. 12 - 1 = 11:00 AM.

18. Q18.Standard Meridian of India is:

    • A.82° 30' W
    • B.82° 30' E✓ Correct Answer
    • C.68° 7' E
    • D.97° 25' E

    Explanation: 82° 30' E (or 82½° E) is accepted as the Standard Meridian for India.

19. Q19.The Indian Standard Time (IST) is how much ahead of Greenwich Mean Time (GMT)?

    • A.4 hours 30 mins
    • B.5 hours 30 mins✓ Correct Answer
    • C.6 hours
    • D.5 hours

    Explanation: 82.5° × 4 min = 330 mins = 5 hours 30 minutes ahead.

20. Q20.Through which city does the Standard Meridian of India pass?

    • A.Delhi
    • B.Mumbai
    • C.Mirzapur (near Allahabad)✓ Correct Answer
    • D.Kolkata

    Explanation: It passes through Mirzapur in Uttar Pradesh.