Population Structures Change Over Time
Gbogbo ọrọ náà
A single graph can tell you whether a country is young and growing fast or old and shrinking. The population pyramid plots how many people fall into each age group and sex, and its shape reveals a nation's past, present and likely future. A broad base means many children; a top heavy shape means many elderly.
This lesson teaches you to read and interpret population pyramids, to explain why structures change over time, and to weigh the consequences of youthful structures (as in Kenya) and ageing structures (as in Japan), including the population policies countries use in response.
Ebumnobi
- Factors influencing population structures: natural increase and net migration.
- The causes and impacts of youthful and ageing population structures, and an evaluation of their impacts.
- One detailed specific example of a named country to include: • reasons for population growth or decline • the impacts of a population policy (pro or anti-natalist).
Nkuzi Olu
Gee ntị na nkuzi a na ngwa
Maapụ uche
E seela isiokwu a ka ị hụ otu echiche si ejikọta.
Mepee maapụ uche na ngwa
Kaadị ncheta
Omume ncheta ngwa ngwa n'ihe a na-anwale n'isiokwu a.
Mee omume kaadị ndị a na ngwa
Akwụkwọ Ọmụmụ
Ndetu Nkuzi Zuru Ezu di na Ngwa Green Bridge
Nweta ngwa Green Bridge CBT na ekwenti gi ma o bu kompiuta maka ulo akwukwo IGCSE zuru oke: akwukwo ule ndi gara aga, usoro nyocha, eserese uche, kaadi omumu na nkuzi olu.
Nnyocha Ọmụmụ
Ekele diri gi maka imecha ihe karịrị na Population Structures Change Over Time. Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.
Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.
Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.
- A population pyramid with a very wide base shows: A. an ageing population B. a high birth rate and youthful population C. high net emigration D. a low fertility rate Answer: B
- Which two factors shape a country's population structure? A. relief and climate B. natural increase and net migration C. area and wealth D. soil and vegetation Answer: B
- An ageing population is most likely to increase government spending on: A. primary schools B. pensions and healthcare C. childcare D. maternity wards Answer: B
- Japan's population is now falling mainly because of: A. high emigration B. a very low birth rate and long life expectancy C. war D. famine Answer: B
- The dependency ratio compares: A. births to deaths B. dependants to the working population C. males to females D. urban to rural people Answer: B
Rue ajuju ndi a n'ime ngwa ahu
Rue ajuju ndi a n'ime ngwa ahu
Akwụkwọ A Na-atụ Aro
Meecha Ajụjụ Ule Ọmarịcha
Ị chọrọ ime ajụjụ ule ọmarịcha gbasara Population Structures Change Over Time? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.
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