Geography is the science of nature and society on the Earth’s surface, of where things are and how they interact. It answers the questions "where?", "why exactly here?" and "what does it lead to?". This introductory topic underpins the whole course: the system of geographical sciences, its methods, the history of discovery and the contribution of Central Asian scholars. Exams ask about branches, scholars and dates; the point is not to memorise blindly but to understand who did what and why.
§1. The system of geographical sciences
Geography is not one science but a system of linked sciences:
Physical geography studies relief, climate, waters, soils, plants and animals and the natural complexes they form. It includes geomorphology (relief), climatology (climate), hydrology (waters), soil geography, biogeography and landscape science.
Economic and social geography studies population, cities, industry, farming, transport, countries and regions.
Border and auxiliary sciences: cartography (map-making), geoecology (relations between people and nature), political geography, recreational geography and toponymy (place names).
Two principles unite all branches: territoriality (every phenomenon is tied to a place) and the integrated approach (components of nature and society affect each other).
The term "geography" was introduced by Eratosthenes (3rd century BC); Greek "ge" — Earth, "grapho" — I write, i.e. "description of the Earth"
§2. Methods of geography
Comparative-descriptive — the oldest method: observing areas, describing and comparing them.
Cartographic — the map is geography’s "second language"; it shows location, distance and patterns.
Statistical — analysing population, production and other indicators in figures.
Remote sensing — aerial photographs and satellite images.
Geographic information systems (GIS) — collecting, storing and analysing spatial data on computers.
Modelling — studying and forecasting processes (such as climate change) with models.
§3. The ancient world and the medieval East
Herodotus (5th century BC) described many peoples and lands on his travels.
Eratosthenes was the first to measure the Earth’s circumference by geometry.
Strabo described the known world in his many-volume "Geography".
Ptolemy (2nd century AD) wrote a "Geography" with maps based on coordinates, used for many centuries.
Muhammad al-Khwarizmi gave the coordinates of hundreds of places in "Kitab surat al-ard" ("The Book of the Image of the Earth").
Abu Rayhan Biruni calculated the Earth’s radius, built a globe, listed coordinates of many places in the "Mas’udi Canon" and discussed whether the Earth might move round the Sun.
Mahmud al-Kashgari drew a map of the lands of the Turkic peoples in his "Diwan Lughat al-Turk" (1072–1074).
Ibn Battuta made long journeys across Africa and Asia.
Zahiriddin Muhammad Babur described precisely the nature, people and economy of Movarounnahr, Afghanistan and India in the "Baburnama".
Ancient evidence that the Earth is round. The Greek philosopher Aristotle (4th century BC) argued from observation: during a lunar eclipse the Earth’s shadow on the Moon is always round; a departing ship disappears hull first and mast last; travelling south, new stars appear in the sky. Building on this idea, Eratosthenes tried to calculate the size of the Earth.
Worked example
Eratosthenes knew that at noon in Syene sunlight fell straight down a well, while in Alexandria it was about 7.2° from vertical. The cities were 5,000 stadia apart. What circumference does this give?
A full circle is 360°: 360 / 7.2 = 50, so the angle difference is 1/50 of the circle.
So the distance is also 1/50 of the circumference.
Circumference: 5,000 · 50 = 250,000 stadia.
Answer: 250,000 stadia — quite close to the true value.
§4. The Great Age of Discovery
From the late fifteenth to the seventeenth century Europeans searched for new sea routes, driven by trade with the East, spices and gold, and progress in shipbuilding and navigation (compass, astrolabe).
Bartolomeu Dias (1488) rounded the Cape of Good Hope at the southern tip of Africa.
Christopher Columbus (1492) crossed the Atlantic and reached the Americas, believing he had arrived in India.
Vasco da Gama (1498) sailed round Africa and reached India by sea.
Magellan’s expedition (1519–1522) made the first voyage round the world; Magellan was killed on the way and the surviving crew completed it. It proved in practice that the Earth is a sphere and showed that the World Ocean is one connected body of water.
Later: the exploration of Australia’s coasts (seventeenth–eighteenth centuries, including James Cook), the discovery of Antarctica (1820, F. Bellingshausen and M. Lazarev) and the first arrival at the South Pole (1911, R. Amundsen).
Worked example
At the equator 1° of arc is about 111 km long. How long is the equator?
A circle has 360°.
Length: 360 · 111 = 39,960 km.
Answer: about 40,000 km.
§5. Exploration of Central Asia and Uzbek geographers
Scientific study of Central Asia intensified in the nineteenth and twentieth centuries:
P. P. Semyonov-Tyan-Shansky explored the Tien Shan;
N. M. Przhevalsky led expeditions across Central Asia;
A. P. Fedchenko studied the Alai Valley and the nature of the Zarafshan and Fergana;
I. V. Mushketov studied geology and earthquakes;
L. S. Berg studied the Aral Sea and developed the theory of natural zones.
Uzbek geographers include H. H. Hasanov (a researcher of the history of discoveries and of place names) and Z. M. Akramov.
Worked example
Put these events in chronological order: Magellan’s expedition, Columbus reaching America, the discovery of Antarctica, Vasco da Gama reaching India.
Recall the dates: Columbus 1492, Vasco da Gama 1498, Magellan 1519–1522, Antarctica 1820.
Arrange the dates in increasing order.
Answer: Columbus → Vasco da Gama → Magellan → Antarctica.
§6. Introduction to economic and social geography
This branch studies how human activity is organised in space: why a factory was built here, why people crowd into oases, which factors decide location. The main location factors are raw materials, water, energy, transport, labour and consumers. Economic geography is closely tied to physical geography: natural conditions and resources are the basis of the economy, and the economy in turn changes nature. That is why modern geography studies nature and society together.
Check yourself
Who introduced the term "geography"?
Which Central Asian scholar built a globe and calculated the Earth’s radius?
Which expedition made the first voyage round the world?
Who explored the Alai Valley?
Which branch does climatology belong to?
If the angle difference is 9°, what fraction of the circumference is the distance?
When was Antarctica discovered?
What is a computer system for analysing spatial data called?
Common mistakes
Seeing Biruni only as an astronomer — he contributed greatly to geodesy and geography too.
Treating economic geography as a part of physical geography — they are equal branches.
Saying Magellan sailed round the world — he died on the way; his expedition completed the voyage.
Writing that Columbus reached India — Vasco da Gama was the one who reached India by sea.
Confusing Eratosthenes and Ptolemy: the term and the measurement of the Earth belong to Eratosthenes.