Age Structure Diagrams - AP Environmental Science
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What type of population growth is indicated by a bulging middle in an age structure diagram?
What type of population growth is indicated by a bulging middle in an age structure diagram?
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Past population boom. Historical period of high fertility.
Past population boom. Historical period of high fertility.
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What does a concave shape in an age structure diagram indicate?
What does a concave shape in an age structure diagram indicate?
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High mortality rates. Deaths reduce population at older ages.
High mortality rates. Deaths reduce population at older ages.
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What does an age structure diagram with a uniform taper indicate?
What does an age structure diagram with a uniform taper indicate?
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Balanced birth and death rates. Stable population with consistent vital rates.
Balanced birth and death rates. Stable population with consistent vital rates.
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Which age structure diagram shape indicates a country in the post-industrial stage?
Which age structure diagram shape indicates a country in the post-industrial stage?
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Rectangular or constrictive. Developed nations have low growth rates.
Rectangular or constrictive. Developed nations have low growth rates.
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What does an age structure diagram represent?
What does an age structure diagram represent?
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Distribution of a population by age and sex. Shows population composition visually by demographic groups.
Distribution of a population by age and sex. Shows population composition visually by demographic groups.
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What does an age structure diagram with a bulging bottom half suggest?
What does an age structure diagram with a bulging bottom half suggest?
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High birth rates. Many young people indicate recent fertility increases.
High birth rates. Many young people indicate recent fertility increases.
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What does the width of bars in an age structure diagram represent?
What does the width of bars in an age structure diagram represent?
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Population size of each age group. Bar width corresponds to cohort size.
Population size of each age group. Bar width corresponds to cohort size.
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What does a tapering base in an age structure diagram suggest for future population size?
What does a tapering base in an age structure diagram suggest for future population size?
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Potential decline. Fewer births mean smaller future generations.
Potential decline. Fewer births mean smaller future generations.
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Identify the age group most affected by high mortality, as shown in an age structure diagram.
Identify the age group most affected by high mortality, as shown in an age structure diagram.
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Older age groups. Mortality increases naturally with advancing age.
Older age groups. Mortality increases naturally with advancing age.
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What does a columnar age structure diagram indicate about birth and death rates?
What does a columnar age structure diagram indicate about birth and death rates?
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Low birth and death rates. Stable populations have balanced vital rates.
Low birth and death rates. Stable populations have balanced vital rates.
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In age structure diagrams, what does a tapering top suggest?
In age structure diagrams, what does a tapering top suggest?
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High mortality in older age groups. Natural mortality increases with age.
High mortality in older age groups. Natural mortality increases with age.
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Identify the typical shape of an age structure diagram for a declining population.
Identify the typical shape of an age structure diagram for a declining population.
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Inverted pyramid. Top-heavy shape from low birth rates.
Inverted pyramid. Top-heavy shape from low birth rates.
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Identify the demographic transition stage associated with a rectangular age structure diagram.
Identify the demographic transition stage associated with a rectangular age structure diagram.
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Stage 4: Low Growth. Low growth characterizes developed nations.
Stage 4: Low Growth. Low growth characterizes developed nations.
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What does a bulge in the middle of an age structure diagram suggest?
What does a bulge in the middle of an age structure diagram suggest?
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Past high birth rates. Baby boom generation creates visible bulge.
Past high birth rates. Baby boom generation creates visible bulge.
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How can you identify a population undergoing demographic transition in an age structure diagram?
How can you identify a population undergoing demographic transition in an age structure diagram?
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Changes in shape over time. Demographic transition creates evolving population structure.
Changes in shape over time. Demographic transition creates evolving population structure.
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What does a concave shape in an age structure diagram indicate?
What does a concave shape in an age structure diagram indicate?
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High mortality rates. Deaths reduce population at older ages.
High mortality rates. Deaths reduce population at older ages.
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Which age group is typically the largest in a rapidly growing population?
Which age group is typically the largest in a rapidly growing population?
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Younger age group. High birth rates create large youth populations.
Younger age group. High birth rates create large youth populations.
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What does a narrow base in an age structure diagram indicate?
What does a narrow base in an age structure diagram indicate?
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Declining population. Few births means fewer young people.
Declining population. Few births means fewer young people.
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What shape is an age structure diagram for a stable population?
What shape is an age structure diagram for a stable population?
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Rectangular. Equal birth and death rates create uniform width.
Rectangular. Equal birth and death rates create uniform width.
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What does a broad top in an age structure diagram indicate?
What does a broad top in an age structure diagram indicate?
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Large elderly population. Low mortality and fertility create aging populations.
Large elderly population. Low mortality and fertility create aging populations.
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How does an age structure diagram indicate a demographic dividend?
How does an age structure diagram indicate a demographic dividend?
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Large working-age population. Optimal ratio of workers to dependents.
Large working-age population. Optimal ratio of workers to dependents.
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What type of population growth is indicated by a bulging middle in an age structure diagram?
What type of population growth is indicated by a bulging middle in an age structure diagram?
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Past population boom. Historical period of high fertility.
Past population boom. Historical period of high fertility.
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What is the demographic implication of a large working-age population in an age structure diagram?
What is the demographic implication of a large working-age population in an age structure diagram?
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Economic growth potential. Large workforce drives economic productivity.
Economic growth potential. Large workforce drives economic productivity.
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Identify the demographic trend depicted by an age structure diagram with a large youth population.
Identify the demographic trend depicted by an age structure diagram with a large youth population.
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Potential rapid growth. Large reproductive cohort enables future growth.
Potential rapid growth. Large reproductive cohort enables future growth.
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What does a constrictive shape in an age structure diagram indicate about a population's future?
What does a constrictive shape in an age structure diagram indicate about a population's future?
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Potential decline. Narrow base predicts population shrinkage.
Potential decline. Narrow base predicts population shrinkage.
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What does an age structure diagram with a wide middle suggest about economic pressures?
What does an age structure diagram with a wide middle suggest about economic pressures?
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Higher economic demand. Large working-age population needs resources and jobs.
Higher economic demand. Large working-age population needs resources and jobs.
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Identify the age structure diagram shape for a country in the pre-industrial stage.
Identify the age structure diagram shape for a country in the pre-industrial stage.
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Pyramid with wide base. High birth and death rates create pyramid.
Pyramid with wide base. High birth and death rates create pyramid.
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What does an age structure diagram with a narrow youth section suggest about future workforce size?
What does an age structure diagram with a narrow youth section suggest about future workforce size?
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Shrinking workforce. Fewer young people mean smaller future workforce.
Shrinking workforce. Fewer young people mean smaller future workforce.
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In which stage of demographic transition is a population with a pyramid-shaped age structure diagram?
In which stage of demographic transition is a population with a pyramid-shaped age structure diagram?
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Stage 2: Early Expanding. High birth rates characterize early expansion.
Stage 2: Early Expanding. High birth rates characterize early expansion.
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How does a high dependency ratio appear in an age structure diagram?
How does a high dependency ratio appear in an age structure diagram?
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Large base and top. Many dependents relative to working-age population.
Large base and top. Many dependents relative to working-age population.
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