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Class 12 Human Geography: Nature and Scope: cheat sheet

CBSE Social Science. What human geography studies, how people and nature act on each other (determinism, possibilism, neo-determinism), the approaches over time, and its fields.

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Key ideas

Remember

DefinitionsRatzel: synthesis of societies and the earth’s surface; Ellen C. Semple: the ever-changing relationship
Approaches in orderexploration (early colonial) → regional analysis → areal differentiation (1930s) → quantitative revolution (late 1950s–60s) → humanistic and behavioural (1970s) → post-modernism (1990s)
Field and sister disciplinebehavioural – psychology; population – demography; medical – epidemiology; cultural – anthropology; historical – history
Warmer by heatinginside temperature − outside temperature, e.g. 23 − (−18) = 41 °C
Time saveddays × 24 × 60 = minutes; times faster = old time ÷ new time

Watch out

Worked example

Suppose a letter once took 8 days to arrive and a message now takes 15 minutes by internet. How many minutes are 8 days, and how many times faster is the message?

Working: 8 × 24 × 60 = 11,520; ÷ 15

Answer: 11,520 minutes; 768 times faster

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