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APHG Unit 2.1-2.4
Words from learning objective 2.1-2.4
| Term | Definition |
|---|---|
| population distribution | a description of how individuals are distributed with respect to one another |
| population density | a measurement of the number of people per given unit of land |
| arithmetic densiy | the total number of people divided by the total land area |
| arable land | land suited for agriculture |
| physiological density | the number of people per unit of area of arable land |
| agricultural density | the ratio of the number of farmers to the total amount of land suitable for agriculture |
| carrying capacity | largest number of individuals of a population that an environment can support |
| sex ratio | the number of males per 100 females in the population |
| age cohort | people born at roughly the same time who pass through the course of life together |
| population pyramid | a model used in population geography to show the age and sex distribution of a particular area |
| Baby Boom | a cohort of individuals born in the USA between 1946 and 1964 which was a time of relative peace and prosperity following WW2 |
| mortality | the state of being subject to death |
| fertility | the production of offspring within a population |
| doubling time | the number of years needed to double a population assuming a constant rate of natural increase |
| natural increase | the growth rate of a population; the difference between birthrate and death rate |
| demography | the scientific study of population characteristics |
| demographics | statistical data relating to the population and particular groups within it |