Page 35 - ICSE GEOGRAPHY

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Age Male Female

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Progressive Expanding Stationary Constrictive

A graph showing a comparison of the four population pyramids

Let’s Recall

• Population dynamics can be defi ned as the study of the changing pattern of population size,
growth and distribution.
• The world’s population is spread unevenly across the globe with small concentrations of large
numbers of people living in the same area.
• Places with hostile environments are less populated and places with habitable environments
are more populated.
• Population density is the average number of people per square kilometre.
• Physical, economic and social and cultural factors are responsible for population growth.
• The factors that impact population change are birth, death and migration.
• Population pyramids are graphs that show information about the age and gender of people
in a specifi c country.

Let’s Learn

A Choose the correct answer from the options given below.
1. Demography is the study of ___________________.
(a) physical geography. (b) population.

(c) animals. (d) climate.
2. One of the greatest concentrations of population is ___________________.
(a) in Argentina (b) on the Gangetic Plains in northern
India.
(c) in Bangladesh (d) on the Nile River.

3. What is a sex ratio?
(a) Number of females per thousand males (b) Number of females per hundred males
(c) The study of population growth (d) Diff erence between birth rate and
death rates

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