SSC Geography Introduction PPT Slides (LEC #1)

This article is built around the SSC Geography Introduction PPT Slides (LEC #1) – Serial #79 of the Complete Foundation Batch for All SSC Exams PPT Series published on slideshareppt.net. Geography is one of the highest-scoring and most consistently tested subjects across SSC CGL, SSC CHSL, SSC MTS, SSC GD Constable, and RRB Group D exams. The PPT is available in both Google Slides and Google Drive formats, in bilingual Hindi + English medium, making it ideal for a wide range of students. Whether you are doing a marathon revision session before the exam or a teacher preparing structured classroom material, this resource gives you everything in one place.

PPT Resource Overview

Detail	Information
Lecture Number	LEC #1 (Geography Series)
Serial Number in Complete Batch	#79
Subject	Geography – Introduction (परिचय)
Series Name	Complete Foundation Batch for All SSC Exams (PPT Series)
Total Slides	20 PPT Slides
File Size	6 MB
Language	Hindi + English (Bilingual)
Format Available	Google Slides & Google Drive (PDF also available)
Website	www.slideshareppt.net
Target Exams	SSC CGL, SSC CHSL, SSC MTS, SSC GD Constable, RRB Group D
Suitable For	Students (self-study & marathon revision) and Teachers (classroom use)

SSC Geography Introduction PPT Slides (LEC #1)

Note: Above is PPT in GOOGLE SLIDES (HTML AND IFRAME COMBINATION) and if you wish to download the Complete SSC series (PPT slides), visit this Link – REDIRECT PAGE.

Master Timeline: History and Development of Geography

Period / Era	Key Development	SSC Exam Relevance
Before 500 BCE – Ancient India	Vedic texts reference Bhu-Mandal (Earth sphere), rivers, and sacred mountains	Origin of Indian geographical thought
~600 BCE – Ancient Greece	Anaximander creates the first known world map; Pythagoras proposes a spherical Earth	Concept of globe and map origin
276–194 BCE	Eratosthenes calculates Earth’s circumference (~40,000 km) and coins the word ‘Geography’	Father of Geography – very frequently asked
~150 CE – Ptolemy	Ptolemy publishes Geographia – introduces coordinate system, map projections	Foundation of modern cartography
700–1400 CE – Arab Scholars	Al-Idrisi and Ibn Battuta advance map-making and travel-based geographical knowledge	Historical Geography context
1492	Columbus’s voyage demonstrates practical spherical Earth navigation	Age of Exploration begins
1543 – Copernicus	Heliocentric model proposed – Earth revolves around the Sun	Solar system basics for SSC Science-GK
17th–18th Century	Modern Geography branches emerge: Physical, Human, Economic Geography	Branch classification in SSC syllabus
1830	Royal Geographical Society founded in London – geography institutionalised	Institutional history of Geography
19th–20th Century	Climatology, Oceanography, and Geomorphology develop as formal sub-disciplines	Sub-branches asked in SSC CGL & CHSL
Post-1950	Remote Sensing and GIS (Geographic Information System) introduced	Modern tools – SSC CGL Tier II
Present Day	Satellite mapping, Google Earth, and ISRO’s Bhuvan platform transform geography	Current Affairs + Geography integration

Topic-Wise Lesson Roadmap: What to Study and in What Order

Use this roadmap to build a clear study plan for Geography under SSC exams. Each category contains the main topic, sub-topics to cover, and the sequence to follow. Start from Category 1 and move forward step by step – do not skip any category, as each builds on the previous one.

CATEGORY 1 – FOUNDATIONS OF GEOGRAPHY (Start Here)
Step	Main Topic	Sub-Topics to Cover	Priority for SSC
1.1	Introduction to Geography	Meaning of Geography, origin of the word (Geo + Graphia), definition, scope	High
1.2	Father of Geography	Eratosthenes – life, contribution, calculation of Earth’s circumference, coining the term	Very High
1.3	Branches of Geography	Physical Geography, Human Geography, Economic Geography, Political Geography, Cartography, Climatology, Oceanography, Geomorphology, Biogeography, Remote Sensing & GIS	High
1.4	Tools of Geography	Maps, Globe, Compass, GPS, GIS, Remote Sensing, Satellite Imagery, ISRO Bhuvan	Medium
CATEGORY 2 – THE EARTH: SHAPE, SIZE & MOTIONS
Step	Main Topic	Sub-Topics to Cover	Priority for SSC
2.1	Shape of the Earth	Oblate Spheroid (Geoid), equatorial bulge, polar flattening, difference between equatorial and polar radius	Very High
2.2	Size of the Earth	Equatorial circumference (~40,075 km), polar circumference, total surface area (510 mn sq km), land vs water ratio (29:71)	High
2.3	Rotation of the Earth	Direction (West to East), duration (23h 56m 4s), effect: Day & Night, Coriolis Effect	Very High
2.4	Revolution of the Earth	Duration (365d 5h 48m 46s), effect: Seasons, Solstices, Equinoxes, variation in day length	Very High
2.5	Eclipses	Solar Eclipse, Lunar Eclipse – conditions and types	Medium
CATEGORY 3 – LATITUDES AND LONGITUDES (Most Asked in SSC)
Step	Main Topic	Sub-Topics to Cover	Priority for SSC
3.1	What are Latitudes?	Definition, direction (parallel lines), range (0° to 90° N/S), Equator as reference	Very High
3.2	Important Latitudes	Equator (0°), Tropic of Cancer (23.5°N), Tropic of Capricorn (23.5°S), Arctic Circle (66.5°N), Antarctic Circle (66.5°S), North Pole (90°N), South Pole (90°S)	Very High
3.3	What are Longitudes?	Definition, direction (vertical lines), range (0° to 180° E/W), Prime Meridian as reference	Very High
3.4	Prime Meridian & GMT	0° longitude, passes through Greenwich England, basis for world time zones, GMT/UTC	Very High
3.5	International Date Line	180° longitude, zigzag path to avoid countries, crossing rules (gain/lose a day)	High
3.6	Indian Standard Time (IST)	82.5°E meridian, Mirzapur UP, IST = GMT + 5:30, why India has one time zone	Very High
3.7	Time Zones	Concept of time zones, how longitude determines local time, countries with multiple zones	Medium
CATEGORY 4 – INDIA’S GEOGRAPHY: BASICS & BOUNDARIES
Step	Main Topic	Sub-Topics to Cover	Priority for SSC
4.1	India’s Location & Extent	Latitudinal extent (8°4’N to 37°6’N), Longitudinal extent (68°7’E to 97°25’E)	Very High
4.2	India’s Size & Rank	Area: 32.87 lakh sq km, 7th largest country, 1st in population (2023)	Very High
4.3	India’s Extreme Points	Northernmost: Indira Col, Southernmost: Indira Point, Easternmost: Kibithu, Westernmost: Sir Creek	High
4.4	India’s Borders	Total land border: 15,200 km, coastline: 7,516.6 km, longest border: Bangladesh (4,156 km)	Very High
4.5	India’s Neighbours	7 land neighbours: Pakistan, Afghanistan, China, Nepal, Bhutan, Bangladesh, Myanmar; 2 sea neighbours: Sri Lanka, Maldives	Very High
4.6	Tropic of Cancer through India	Passes through 8 states: Gujarat, Rajasthan, MP, Chhattisgarh, Jharkhand, West Bengal, Tripura, Mizoram	Very High
4.7	India’s Coastline States	9 coastal states, longest coastline: Gujarat, southernmost coastline: Tamil Nadu	High
CATEGORY 5 – PHYSICAL DIVISIONS OF INDIA
Step	Main Topic	Sub-Topics to Cover	Priority for SSC
5.1	The Himalayas	Formation (folded mountains), three ranges (Himadri, Himachal, Shivalik), highest peaks, rivers originating	Very High
5.2	The Northern Plains	Formation (alluvial deposits), rivers (Indus, Ganga, Brahmaputra systems), importance for agriculture	Very High
5.3	The Peninsular Plateau	Deccan Plateau, Eastern Ghats, Western Ghats, minerals, rivers	High
5.4	The Coastal Plains	Eastern Coastal Plain, Western Coastal Plain, features and importance	Medium
5.5	The Islands	Andaman & Nicobar (Bay of Bengal), Lakshadweep (Arabian Sea), coral reefs, Indira Point	High
5.6	The Thar Desert	Location (Rajasthan), hot desert features, vegetation, rivers	Medium
CATEGORY 6 – RIVERS OF INDIA
Step	Main Topic	Sub-Topics to Cover	Priority for SSC
6.1	Himalayan Rivers (Perennial)	Indus system, Ganga system (Ganga, Yamuna, Ghaghra, Gandak, Kosi), Brahmaputra, river interlinking	Very High
6.2	Peninsular Rivers (Seasonal)	East-flowing: Mahanadi, Godavari, Krishna, Cauvery; West-flowing: Narmada, Tapi	Very High
6.3	River Basics	Source, mouth, tributary, distributary, delta, estuary, basin, watershed	High
6.4	River-wise Facts	Longest river in India: Ganga; Largest basin: Ganga; Only west-flowing major rivers: Narmada & Tapi	Very High
CATEGORY 7 – CLIMATE OF INDIA
Step	Main Topic	Sub-Topics to Cover	Priority for SSC
7.1	Factors Affecting Climate	Latitude, altitude, distance from sea, wind direction, relief features, ocean currents	High
7.2	Indian Monsoon	Southwest monsoon (June–September), Northeast monsoon, Arabian Sea branch, Bay of Bengal branch	Very High
7.3	Seasons in India	Summer (March–May), Monsoon (June–Sept), Retreating Monsoon (Oct–Nov), Winter (Dec–Feb)	Very High
7.4	Cyclones	Tropical cyclones in Bay of Bengal and Arabian Sea, naming convention, recent cyclones	High
7.5	El Nino & La Nina	Effect on Indian monsoon, Pacific Ocean phenomenon, drought years in India	High
CATEGORY 8 – SOILS, VEGETATION & FORESTS
Step	Main Topic	Sub-Topics to Cover	Priority for SSC
8.1	Types of Soil in India	Alluvial soil, Black soil (Regur), Red soil, Laterite soil, Desert soil, Mountain soil – location and crops	Very High
8.2	Natural Vegetation	Tropical rainforest, Tropical deciduous, Tropical thorn, Montane forests, Mangroves	High
8.3	Forest Cover	India’s forest cover %, Project Tiger, Project Elephant, biosphere reserves	High
CATEGORY 9 – RESOURCES & ECONOMIC GEOGRAPHY
Step	Main Topic	Sub-Topics to Cover	Priority for SSC
9.1	Minerals of India	Iron ore (Jharkhand, Odisha), Coal (Jharkhand, MP), Bauxite, Mica, Copper, Petroleum zones	Very High
9.2	Agriculture	Kharif and Rabi crops, crop types, Green Revolution, major crop-producing states	Very High
9.3	Industries	Iron & Steel, Textile, Petrochemical, Automobile, IT – location and importance	High
9.4	Transport & Ports	Major ports, National Highways, Golden Quadrilateral, rail network	High
CATEGORY 10 – WORLD GEOGRAPHY BASICS
Step	Main Topic	Sub-Topics to Cover	Priority for SSC
10.1	Continents & Oceans	7 continents, 5 oceans – area, location, largest/smallest facts	Very High
10.2	World Mountains & Deserts	Andes, Alps, Rockies, Sahara, Arabian, Gobi deserts	High
10.3	World Rivers & Lakes	Amazon, Nile, Congo; Caspian Sea, Lake Superior, Lake Baikal	High
10.4	Important World Facts	Largest country by area: Russia; most populous: India; smallest: Vatican; longest river: Nile/Amazon (debated)	Very High
10.5	Straits, Gulfs & Passes	Strait of Hormuz, Palk Strait, Strait of Malacca, Gulf of Mannar, Bolan Pass, Khyber Pass	High

What is Geography? – Core Concepts for SSC

The word Geography comes from the Greek words Geo (Earth) and Graphia (description or writing). Literally, Geography means ‘description of the Earth.’ It is the scientific study of Earth’s surface, physical features, atmosphere, resources, people, and the spatial relationships that exist between all of these elements.

For SSC exams, Geography is broadly split into two parts:

• Physical Geography – Studies natural features: landforms, climate, rivers, oceans, soil, and vegetation
• Human Geography – Studies population, settlements, agriculture, industries, transport, and trade

Most SSC General Awareness sections draw questions from both Physical and Human Geography, often linking them with Current Affairs and Environmental topics.

Branches of Geography – SSC Reference Table

Branch	What It Studies	Common SSC Exam Topic
Physical Geography	Natural features: landforms, climate, water bodies	Himalayas, Deccan Plateau, monsoon mechanism
Human Geography	Population, migration, settlements, culture	Indian population distribution, urbanisation trends
Economic Geography	Agriculture, industries, trade, resources	Mineral belts, crop zones, major ports
Political Geography	Boundaries, territories, nations, regions	India’s neighbours, state borders, disputed territories
Climatology	Climate systems, weather patterns, seasons	Monsoon, cyclones, La Nina and El Nino
Oceanography	Ocean currents, tides, marine ecosystems	Indian Ocean currents, Bay of Bengal features
Geomorphology	Formation of Earth’s surface features	Types of mountains, plateau formation, erosion
Biogeography	Distribution of plants and animals across regions	Biomes, wildlife sanctuaries, biodiversity hotspots
Cartography	Science of map-making	Map reading, latitude and longitude, scale, projection
Remote Sensing & GIS	Satellite imagery and spatial data analysis	ISRO, Bhuvan, GPS applications in governance

Earth – Basic Facts for SSC Aspirants

Shape and Size

• Shape: Oblate Spheroid (slightly flattened at poles, bulging at equator)
• Equatorial radius: 6,378 km
• Polar radius: 6,357 km
• Equatorial circumference: approximately 40,075 km
• Total surface area: 510 million sq km
• Land area: ~149 million sq km (29%)
• Water area: ~361 million sq km (71%)

Earth’s Motions

Motion	Direction	Duration	Effect
Rotation (on its own axis)	West to East	23 hours 56 minutes 4 seconds	Day and Night; Coriolis Effect
Revolution (around the Sun)	West to East (anticlockwise from North Pole)	365 days 5 hours 48 min 46 sec	Seasons, Solstices, Equinoxes

Latitudes and Longitudes – Most Asked Topic in SSC

Key Latitudes

Latitude	Degree	Key Facts for SSC
Equator	0°	Divides Earth into Northern and Southern Hemispheres; maximum solar heat zone; 12-hour day throughout the year
Tropic of Cancer	23.5° N	Passes through 8 Indian states: Gujarat, Rajasthan, MP, Chhattisgarh, Jharkhand, West Bengal, Tripura, Mizoram
Tropic of Capricorn	23.5° S	Southern equivalent of Tropic of Cancer; passes through Australia, South Africa, Brazil
Arctic Circle	66.5° N	Start of Midnight Sun zone – 6 months of continuous daylight in summer; Polar Night in winter
Antarctic Circle	66.5° S	Southern equivalent; midnight sun during southern hemisphere summer
North Pole	90° N	Northernmost point of Earth; 6 months day and 6 months night
South Pole	90° S	Southernmost point; location of Antarctica; coldest place on Earth

Key Longitudes

Longitude	Degree	Key Facts for SSC
Prime Meridian	0°	Passes through Greenwich, England; basis for all time zones worldwide; divides Earth into Eastern and Western Hemispheres
International Date Line (IDL)	180°	Opposite the Prime Meridian; zigzag to avoid islands and countries; crossing East to West adds a day; West to East removes a day
Indian Standard Meridian	82.5° E	Passes through Mirzapur, Uttar Pradesh; IST = GMT + 5 hours 30 minutes; India has one time zone for the entire country

India – Key Geographical Parameters

Parameter	Detail
Total Area	32,87,263 sq km – 7th largest country in the world
Latitudinal Extent	8°4’N to 37°6’N
Longitudinal Extent	68°7’E to 97°25’E
North–South Length	3,214 km
East–West Width	2,933 km
Coastline Length	7,516.6 km (including Andaman & Nicobar and Lakshadweep islands)
Total Land Border	15,200 km
Tropic of Cancer	Passes through 8 Indian states at 23.5°N
Standard Time Meridian	82.5°E – Mirzapur, Uttar Pradesh (IST = GMT + 5:30)
Northernmost Point	Indira Col (near Siachen Glacier, Jammu & Kashmir)
Southernmost Point	Indira Point (Great Nicobar Island – submerged partially after 2004 tsunami)
Easternmost Point	Kibithu (Arunachal Pradesh)
Westernmost Point	Sir Creek (Gujarat)
Longest Border Country	Bangladesh – 4,156 km
Neighbouring Countries (Land)	Pakistan, Afghanistan, China, Nepal, Bhutan, Bangladesh, Myanmar
Neighbouring Countries (Sea)	Sri Lanka and Maldives
Longest Coastline State	Gujarat
Rank by Population (2023)	1st in the world (surpassed China in April 2023)

Quick Fact Table – Geography Introduction (SSC Focus)

Fact / Question	Answer
Who coined the term ‘Geography’?	Eratosthenes (Greek scholar, 276–194 BCE)
Father of Geography	Eratosthenes
Shape of the Earth	Oblate Spheroid (Geoid)
Earth’s total surface area	510 million sq km
Percentage of Earth covered by water	71%
Earth’s equatorial circumference	~40,075 km
Earth’s polar circumference	~40,008 km
Highest peak on Earth	Mt. Everest – 8,848.86 m (Nepal-China border)
Deepest point on Earth	Mariana Trench (Pacific Ocean) – ~11,034 m below sea level
Largest continent	Asia
Smallest continent	Australia
Largest ocean	Pacific Ocean
Smallest ocean	Arctic Ocean
India’s total area	32.87 lakh sq km
India’s world rank by area	7th
India’s world rank by population (2023)	1st
India’s Standard Time Meridian	82.5°E – Mirzapur, Uttar Pradesh
Tropic of Cancer in India	23.5°N – passes through 8 states
India’s longest coastline state	Gujarat
ISRO’s satellite mapping platform	Bhuvan
GIS full form	Geographic Information System
Father of Modern Geography	Alexander von Humboldt
Father of Cartography	Anaximander (Ancient Greece)

Podcast-Style Q&A – Rapid Oral Revision

Q1: What does the word Geography literally mean?

Geography comes from the Greek words Geo (Earth) and Graphia (description or writing), so it literally means description of the Earth. The term was coined by the Greek scholar Eratosthenes around 276–194 BCE, which is why he is called the Father of Geography.

Q2: What is the exact shape of the Earth?

Earth is an oblate spheroid – it is slightly flattened at the poles and bulges slightly at the equator. This means the equatorial radius (6,378 km) is slightly larger than the polar radius (6,357 km). SSC exams sometimes ask for the term ‘oblate spheroid’ or ‘geoid’ so remember both.

Q3: Which 8 Indian states does the Tropic of Cancer pass through?

The Tropic of Cancer at 23.5°N passes through these 8 states from west to east: Gujarat, Rajasthan, Madhya Pradesh, Chhattisgarh, Jharkhand, West Bengal, Tripura, and Mizoram. A popular trick to remember them is the acronym GRMC-JWTM.

Q4: What is IST and which place determines it?

IST stands for Indian Standard Time, which is based on the 82.5°E longitude passing through Mirzapur in Uttar Pradesh. IST is GMT plus 5 hours 30 minutes. India maintains a single time zone for the entire country, unlike the USA, Russia, and Canada, which have multiple time zones.

Q5: What is the difference between Rotation and Revolution of the Earth?

Rotation is the spinning of Earth on its own axis from west to east, completing one full rotation in approximately 23 hours 56 minutes – this is what causes day and night. Revolution is Earth’s journey around the Sun, completing one orbit in 365 days 5 hours 48 minutes – this is what causes the four seasons and variation in day length across months.

Q6: What is the International Date Line and why does it zigzag?

The International Date Line (IDL) is located at 180° longitude, directly opposite the Prime Meridian. It is not a perfectly straight line – it bends and zigzags around islands and countries in the Pacific Ocean so that nations like Kiribati, Fiji, and Russia do not get split into two different calendar days. Crossing from west to east across the IDL removes a calendar day; crossing from east to west adds one.

Q7: What is the significance of IST being at 82.5°E and not 82°E or 83°E?

India’s standard meridian is specifically set at 82.5°E because it is exactly 5 hours 30 minutes ahead of the Prime Meridian (0°). Every 15° of longitude equals exactly 1 hour difference in time, and every 1° equals 4 minutes. So 82.5° divides exactly to give a neat 5h 30m time offset from GMT, which is why 82.5° was chosen over 82° or 83°.

30 MCQ Practice Questions – Geography Introduction

All questions are modelled on SSC CGL, CHSL, MTS, and GD Constable previous year patterns. Answers follow at the end of this section.

1. Who coined the term ‘Geography’?

A) Ptolemy  B) Eratosthenes  C) Aristotle  D) Strabo

• What does ‘Geo’ mean in the word Geography?

A) Water  B) Sky  C) Earth  D) Life

• The shape of the Earth is best described as:

A) Perfect sphere  B) Oblate spheroid  C) Prolate spheroid  D) Flat disc

• Earth’s equatorial circumference is approximately:

A) 30,000 km  B) 35,000 km  C) 40,075 km  D) 45,000 km

• What percentage of Earth’s surface is covered by water?

A) 50%  B) 60%  C) 71%  D) 80%

• The Tropic of Cancer passes through how many Indian states?

A) 6  B) 7  C) 8  D) 9

• India’s Standard Meridian at 82.5°E passes through which state?

A) Bihar  B) Madhya Pradesh  C) Uttar Pradesh  D) Odisha

• Indian Standard Time (IST) is ahead of GMT by:

A) 5 hours  B) 5 hours 30 minutes  C) 6 hours  D) 4 hours 30 minutes

• Rotation of Earth causes:

A) Seasons  B) Day and Night  C) Ocean tides  D) Solar eclipses

1. Earth completes one revolution around the Sun in approximately:

A) 24 hours  B) 30 days  C) 365 days 6 hours  D) 366 days

1. The International Date Line is located at:

A) 0° longitude  B) 90° E  C) 180° longitude  D) 90° W

1. The Prime Meridian passes through which city?

A) Paris  B) London  C) Greenwich  D) New York

1. India’s total area is approximately:

A) 20 lakh sq km  B) 25 lakh sq km  C) 32.87 lakh sq km  D) 40 lakh sq km

1. India is the ___ largest country by area in the world.

A) 5th  B) 6th  C) 7th  D) 8th

1. The southernmost point of India is:

A) Cape Comorin (Kanyakumari)  B) Indira Point  C) Indira Col  D) Port Blair

1. Which state does the Tropic of Cancer NOT pass through?

A) Gujarat  B) Maharashtra  C) Madhya Pradesh  D) Chhattisgarh

1. The largest ocean in the world is:

A) Atlantic  B) Indian  C) Pacific  D) Arctic

1. The highest peak on Earth is:

A) K2  B) Kangchenjunga  C) Mt. Everest  D) Makalu

1. The deepest point on Earth is located in:

A) Atlantic Ocean  B) Indian Ocean  C) Southern Ocean  D) Pacific Ocean

• India shares its longest land border with which country?

A) China  B) Pakistan  C) Bangladesh  D) Nepal

• The science of map-making is called:

A) Geomorphology  B) Cartography  C) Climatology  D) Oceanography

• GIS stands for:

A) Global Information System  B) Geographic Information System  C) General Integration Software  D) Ground Information Survey

• Which scholar first calculated the circumference of the Earth?

A) Aristotle  B) Plato  C) Eratosthenes  D) Pythagoras

• The Arctic Circle is located at:

A) 23.5° N  B) 66.5° N  C) 90° N  D) 45° N

• India’s standard time meridian passes through which city?

A) Allahabad  B) Varanasi  C) Mirzapur  D) Agra

• India’s coastline length (including islands) is approximately:

A) 5,000 km  B) 6,100 km  C) 7,516 km  D) 9,000 km

• Which Indian state has the longest coastline?

A) Tamil Nadu  B) Andhra Pradesh  C) Maharashtra  D) Gujarat

• Earth’s polar radius is:

A) 6,378 km  B) 6,357 km  C) 6,400 km  D) 6,300 km

• The scientific study of climate patterns is called:

A) Meteorology  B) Climatology  C) Hydrology  D) Ecology

• ISRO’s satellite-based mapping platform is called:

A) Google Earth  B) GPS Map  C) Bhuvan  D) GeoStar

Answer Key

Q	Ans	Q	Ans	Q	Ans
1	B	11	C	21	B
2	C	12	C	22	B
3	B	13	C	23	C
4	C	14	C	24	B
5	C	15	B	25	C
6	C	16	B	26	C
7	C	17	C	27	D
8	B	18	C	28	B
9	B	19	D	29	B
10	C	20	C	30	C

also read: SSC Polity Constitutional Amendment PPT Slides (LEC #22)

Rapid Revision Cheat Sheet – Geography Introduction

Topic	Key Point
Term ‘Geography’	Coined by Eratosthenes – Greek: Geo (Earth) + Graphia (writing)
Father of Geography	Eratosthenes (276–194 BCE)
Father of Modern Geography	Alexander von Humboldt
Earth’s shape	Oblate Spheroid – flattened at poles, bulging at equator
Equatorial circumference	~40,075 km
Water vs Land ratio	71% water : 29% land
Rotation	West to East – 23h 56m – causes Day & Night
Revolution	Around Sun – 365d 5h 48m – causes Seasons
Equator	0° latitude – maximum heat – divides N & S hemispheres
Tropic of Cancer	23.5°N – 8 Indian states (Guj, Raj, MP, CG, JH, WB, Tripura, Mizoram)
Tropic of Capricorn	23.5°S – passes through Australia, South Africa, Brazil
Prime Meridian	0° longitude – Greenwich, England – global time zone base
IST Meridian	82.5°E – Mirzapur, UP – IST = GMT + 5 hours 30 minutes
International Date Line	180° longitude – zigzag path – crossing adds/removes a day
India’s area	32.87 lakh sq km – 7th largest country in world
India’s coastline	7,516.6 km including islands
Longest coastline state	Gujarat
India population rank (2023)	1st in the world
Southernmost point of India	Indira Point, Great Nicobar Island
Standard meridian city	Mirzapur, Uttar Pradesh (82.5°E)
Highest peak on Earth	Mt. Everest – 8,848.86 m
Deepest point on Earth	Mariana Trench – ~11,034 m – Pacific Ocean
Largest continent	Asia | Largest ocean: Pacific Ocean
ISRO mapping platform	Bhuvan
GIS full form	Geographic Information System
Serial Number of this PPT	#79 in the Complete Foundation Batch

Conclusion

Geography Introduction forms the bedrock of your entire Geography preparation for SSC and RRB exams. Understanding the basics – what Geography means, Earth’s shape and dimensions, latitudes and longitudes, India’s geographic parameters, and the foundational branches – equips you for every subsequent topic that builds on top of this lecture.

The SSC Geography Introduction PPT Slides (LEC #1), Serial #79 of the Complete Foundation Batch, is available in bilingual Hindi + English format on slideshareppt.net via Google Slides and Google Drive. It is a self-made resource, regularly updated to reflect the current SSC and RRB exam pattern, and is suitable for both students revising independently and teachers conducting batch classes.

Use the topic-wise lesson roadmap provided in this article to structure your full Geography study plan from Category 1 right through to Category 10. Revisit the rapid revision cheat sheet in the week before your exam and practice the 30 MCQs to test how well the concepts have been absorbed. Bookmark this page and the PPT for easy access during pre-exam revision.