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Geography Unit 2 Theme A > Population Structure > Flashcards

Population Structure Flashcards

1
Q

What is meant by population structure?

A

Population structure is the way the population is divided between male and female, and different age groups.

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2
Q

A wide base shows …

A

High birth rate

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3
Q

A narrow base shows …

A

Low birth rate

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4
Q

A straight pyramid shows …

A

Low death rate

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5
Q

A triangular pyramid shows …

A

High death rate

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6
Q

A tall pyramid shows …

A

High life expectancy and good healthcare

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7
Q

A short pyramid shows …

A

Low life expectancy and poor healthcare

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8
Q

Missing young adults shows …

A

Out-migration

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9
Q

Extra young adults shows …

A

In-migration

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10
Q

Who are the aged dependent?

A

People aged 65+

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11
Q

Who are the youth dependent?

A

People aged 0-14

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12
Q

What does a dependency ratio show?

A

The percentage of the population dependent on the rest

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13
Q

Dependency ratio =

A

(Youth dependent + aged dependent) / working population x 100

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14
Q

MEDCs have what kind of population predominantly?

A

Aged-dependent population

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15
Q

LEDCs have what kind of population predominantly?

A

Youth-dependent population

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16
Q

What does ‘dependent’ mean in terms of aged/youth dependent?

A

Dependent means these people do not earn money and need to be supported by the working population.

17
Q

The base of a pyramid is becoming narrower, this means …

A

The birth rate is falling

18
Q

A wide section in the middle of the pyramid shows …

A

A large population currently of working age who will add to the elderly population over the next 30 years.

19
Q

Why are population pyramids useful?

A

They tell us how the population might develop, so we can help plan for the future.
If a country has a high proportion of young people, it will need more schools and teachers.
If a country has a high proportion of old people, it will need more old people’s homes and more money for pensions.

20
Q

Population pyramids can help us compare …

A

The populations of countries.

Geography Unit 2 Theme A (10 decks)

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