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What does a population pyramid show?
A graphical representation of a population’s age and sex structure.
True or False: A wide base in a population pyramid indicates a high proportion of young people.
True.
What does a narrow base in a population pyramid indicate?
Low birth rates, fewer young people, developed country.
What is an expansive population pyramid?
A pyramid with a wide base, showing high birth rates and rapid population growth and a narrow apex.
Give an example of a country with an expansive population pyramid.
Nigeria, India, Pakistan, Bangladesh.
What is a contractive population pyramid?
A pyramid with a narrow base, showing low birth rates and population decline. Typical of highly developed countries.
Give an example of a country with a contractive population pyramid.
Germany, Japan, Italy.
What is a stationary population pyramid?
A pyramid with roughly equal size cohorts, showing stable population growth. Typical of developed countries.
Give an example of a country with a stationary population pyramid.
Australia, Us, Sweden.
Which type of population pyramid often indicates high death rates among older people? A) Expansive B) Contractive C) Stationary
A) Expansive
Compare the shapes of an expansive and a contractive pyramid.
Expansive: wide base, pyramid shape; Contractive: narrow base, top-heavy shape.
What can population pyramids tell us about a country’s future population needs?
Ageing population → more healthcare/retirement support; Young population → more schools/jobs needed.
Why might a developing country have an expansive population pyramid?
High birth rates, declining infant mortality, limited access to contraception.
Which axis of a population pyramid shows age groups? A) Horizontal B) Vertical
B) Vertical
True or False: The horizontal bars of a population pyramid represent age groups.
False (they represent population size; vertical axis is age).
True or False: A population pyramid with a very wide top indicates an ageing population.
True
