Population Pyramids!! Flashcards
(6 cards)
Expansive
Broad base and tapering top, indicating a high proportion of young people and a rapidly growing population. It typically reflects developing countries with high fertility rates, high death rates, and low life expectancies.
Constrictive
A narrow base, indicating a declining birth rate and a larger proportion of elderly individuals. They represent populations that are shrinking and aging, with higher levels of social and economic development, and access to better education and healthcare.
Stationary
A rectangular shape with vertical sides, indicating a stable population where births and deaths are balanced. This means the population is neither growing nor declining significantly, and the percentages of people in each age group are relatively equal. It’s often characteristic of developed nations with low birth rates and high life expectancies.
Rectangular Shape
Equal percentages across age groups
Low birth and death rates
High life expectancy
Developed Countries
Stationary Population Pyramid
Narrow base
Bulging middle
Shrinking population
Declining birth rates
Longer life expectancy
Higher levels of development
Constrictive Population Pyramid
Broad base
Tapering top
High fertility rate
High mortality rate
Rapid population growth
Typical of developing countries
Expansive Population Pyramid