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GEOGRAPHY 
CRASH COURSE
CAPSTONE IAS LEARNING
Page 2


GEOGRAPHY 
CRASH COURSE
CAPSTONE IAS LEARNING
Latitudes and Longitudes
Page 3


GEOGRAPHY 
CRASH COURSE
CAPSTONE IAS LEARNING
Latitudes and Longitudes
•Latitudes and Longitudes are imaginary 
lines used to determine the location of a 
place on earth.
•The shape of the earth is ‘Geoi d’. And the 
location of a place on the earth can be 
mentioned in terms of latitudes and 
longitudes.
•Example: The location of New Delhi is 28° N, 
77° E
Page 4


GEOGRAPHY 
CRASH COURSE
CAPSTONE IAS LEARNING
Latitudes and Longitudes
•Latitudes and Longitudes are imaginary 
lines used to determine the location of a 
place on earth.
•The shape of the earth is ‘Geoi d’. And the 
location of a place on the earth can be 
mentioned in terms of latitudes and 
longitudes.
•Example: The location of New Delhi is 28° N, 
77° E
Latitude
• Latitude is the angular distance of a point on the earth’s surface, 
measured in degrees from the center of the earth.
• As the earth is slightly flattened at the poles, the linear 
distance of a degree of latitude at the pole is a little longer 
than that at the equator.
• For example at the equator (0°) it is 68.704 miles, at 45° it is 
69.054 miles and at the poles it is 69.407 miles. The average is 
taken as 69 miles (111km).
• 1 mile = 1.607 km.
Page 5


GEOGRAPHY 
CRASH COURSE
CAPSTONE IAS LEARNING
Latitudes and Longitudes
•Latitudes and Longitudes are imaginary 
lines used to determine the location of a 
place on earth.
•The shape of the earth is ‘Geoi d’. And the 
location of a place on the earth can be 
mentioned in terms of latitudes and 
longitudes.
•Example: The location of New Delhi is 28° N, 
77° E
Latitude
• Latitude is the angular distance of a point on the earth’s surface, 
measured in degrees from the center of the earth.
• As the earth is slightly flattened at the poles, the linear 
distance of a degree of latitude at the pole is a little longer 
than that at the equator.
• For example at the equator (0°) it is 68.704 miles, at 45° it is 
69.054 miles and at the poles it is 69.407 miles. The average is 
taken as 69 miles (111km).
• 1 mile = 1.607 km.
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FAQs on PPT: Latitude & Longitude - Geography for UPSC CSE

1. What is latitude and longitude?
Ans. Latitude and longitude are geographical coordinates used to pinpoint locations on the Earth's surface. Latitude measures how far north or south a point is from the Equator, while longitude measures how far east or west a point is from the Prime Meridian.
2. How are latitude and longitude measured?
Ans. Latitude is measured in degrees, minutes, and seconds. The Equator is assigned a latitude of 0 degrees, while the North and South Poles have latitudes of 90 degrees north and south, respectively. Longitude is also measured in degrees, minutes, and seconds, with the Prime Meridian serving as the reference line at 0 degrees. It extends 180 degrees east and west, with the International Date Line located at 180 degrees.
3. What are the practical uses of latitude and longitude?
Ans. Latitude and longitude are essential for navigation and map-making purposes. They are used in GPS systems to provide accurate positioning information. Additionally, latitude and longitude help in determining time zones, weather patterns, and studying the Earth's climate and geography.
4. How do latitude and longitude help in locating specific places?
Ans. By using latitude and longitude coordinates, one can precisely locate any place on Earth. For example, a combination of latitude and longitude can be used to find the exact position of cities, landmarks, or even remote areas. This information is crucial for purposes like emergency services, air travel, and global communication.
5. Can latitude and longitude be used to measure distances between two points?
Ans. While latitude and longitude provide the geographical coordinates of a place, they do not directly measure distances between two points. Instead, specialized formulas like the Haversine formula or the Vincenty formula can be used to calculate the distance between two sets of latitude and longitude coordinates accurately.
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