Population Flashcards
(41 cards)
What is demography?
The study of human populations, including size, structure, and changes over time.
What is population size?
The total number of people living in a specific area.
What is population composition?
The makeup of a population by age, sex, and other characteristics.
What is population distribution?
How people are spread across a space (e.g., urban vs rural).
What is population change?
Growth or decline in population based on births, deaths, and migration.
What is birth rate?
The number of live births per 1,000 people in a year.
What is death rate?
The number of deaths per 1,000 people in a year.
What is natural increase rate?
Birth rate minus death rate (does not include migration).
What is migration?
The movement of people from one place to another.
What is fertility rate?
The average number of children a woman is expected to have.
What is life expectancy?
The average number of years a person is expected to live.
What is age structure?
How a population is divided among different age groups.
What is sex ratio?
The number of males compared to females in a population.
What is a population pyramid?
A graph that shows the age and sex of a population.
What does a wide base in a population pyramid show?
High birth rate and many young people.
What does a wide top in a population pyramid show?
Aging population and longer life expectancy.
What is an expansive pyramid?
Wide base, narrow top – growing population.
What is a stationary pyramid?
Even shape – stable population.
What is a constrictive pyramid?
Narrow base, wide top – shrinking population.
What is internal migration?
Moving within the same country.
What is international migration?
Moving from one country to another.
What is voluntary migration?
Choosing to move for better opportunities.
What is forced migration?
Being forced to move due to war, disaster, or danger.
What is seasonal migration?
Moving based on seasons, often for work.