population pyramids Flashcards

1
Q

what is a population pyramid

A

a graph that shows the distribution of ages across a population divided down the centre between male and female members of the population

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2
Q

what are the 3 main population pyramids

A

expanding, contracting, stationary

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3
Q

characteristics of an expansive population pyramid?

A

broader at the base, thinner at the top (pyramid shaped)

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4
Q

characteristics of a constrictive population pyramid

A

constricted at the bottom, wider in the middle

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5
Q

characteristics of a stationary population pyramid

A

square shape, not much variation across ages

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6
Q

what is typically associated with an expansive population pyramid

A

a rapidly growing area with high fertility and mortality rates (developing countries) with the largest proportion of the population consisting of young people

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7
Q

challenges and opportunities of an area with an expansive population pyramid

A

challenges:
- strain on resources
- hard to ensure sufficient food
- lower access to education and employment opportunities
opportunities
- favourable ratio of large proportion of young workforce to dependents

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8
Q

what is typically associated with a constrictive population pyramid

A

an area with high levels of social and economic development and high numbers of middle aged and elderly people but fewer young people (developed countries)

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9
Q

challenges and opportunities of an area with a constrictive population pyramid

A

challenges:
- ageing population may strain healthcare system
- may not have enough workers and become dependent on migrant workers
opportunities:
- increasing retirement age to allow elderly workers to continue working if they wish to

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10
Q

what is associated with a stationary population pyramid

A

population with low mortality and fertility rates, but have a stable population that will not change significantly

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11
Q

challenges and opportunities of areas with stationary population pyramid

A

challenges:
- declining birth rates
opportunities:
- unchanging pattern of fertility and mortality diminishes issues of overcrowding and congestion
- sufficient resources for everyone

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12
Q

countries typically associated with expansive population pyramid

A

developing counties like india, countries in africa, the middle east (chad, congo etc)

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13
Q

countries typically associated with constrictive population pyramid

A

developed countries like some asian countries (singapore, japan, south korea) and european countries (germany)

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14
Q

countries typically associated with stationary population pyramid

A

usa

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