E.E. Populations with Age Structure Diagrams Quiz Crossword
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Down:
1) with little or no overall population growth. The similar population numbers across most age groups suggest that births are replacing deaths at matching rates. A higher proportion of older individuals indicates a relatively low death rate.(examples: Spain, Portugal and Greece3) The y-axis displays age groups in units of years, with the youngest at the bottom and the oldest at the top. |
Across:
2) in other words, undergoing negative growth. The narrow base, with fewer youth compared to older generations, indicates that both birth rates and death rates are low. (examples: Italy and Bulgaria)4) experiencing high birth rates. The diagram has a wide base, which indicates a large proportion of young people compared to older age groups. This generally signals rapid population growth. Slowly expanding populations are increasing but not as wide as a base as expanding rapidly. However, a dramatic reduction in population size between age groups suggests a high death rate, which results in little to no population growth. (Rapidly expanding examples = Guatemala. Nigeria, Saudi Arabia) (Slowly expanding examples = USA, Australia and Canada) 5) a visual representation of the population numbers of a geographical region at a given time, differentiated by sex and age groups.6) A calculation from a formula. This can be interpreted from age structure diagrams by the shape of the structure.
Formula:
((Births + Immigration) - (Deaths- Emmigration) / Pop. size)) x 100 |
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