8.3 Population structure

Question 1

A population pyramid

Answer 1

a diagram that shows the proportion of the population that is male and female in different age groups

Question 2

types of population structures

Answer 2

• expanding (HIGH BR & DR) pyramid shape
• stationary (HIGH BR, economically active, LOW DR)
• declining (LOW BR & LOW DR, old dependant population)

Question 3

Young Dependents:

Answer 3

The number or the percentage of the population under the age of 16.

Question 4

Old Dependents:

Answer 4

The number or the percentage of the population over the age of 65.

Question 5

economically Active:

Answer 5

People between the ages of 16 and 65. This is basically the working group, are independant

Question 6

If a pyramid has a wide base it
indicates ________

Answer 6

high birth rates

Question 7

If there are a lot of old dependents it indicates

Answer 7

high life expectancy

Question 8

less economically developed country (LEDC) population pyramid

Answer 8

• expanding population
• wide base–>high birth rate
• narrow top –>high death rate
• short life expectancy
• more young dependant than old dependant

Question 9

more economically developed country (MEDC) population pyramid

Answer 9

• narrow base–> low birth rate
• broad shape at top–> high life expectancy
• high econmically active population
• straight/ rectangle shape
• elderly dependents

Question 10

ad and dis of youthful population

Answer 10

ad-
* large and cheap future workforce
* large tax base for the country

dis-
* increases pension costs
* puts strain on education and health services
* lack of available jobs
* puts strain on available accommodation

Question 11

sudden change in population

Answer 11

wars
diseases
mass migration
natural disaster