Population ; pyramids/graphs

Question 1

What is a ‘demographic transition model’?

Answer 1

shows prediction of how countries will develop and how it will affect the birthrate and deathrate overtime.

Question 2

Describe the first stage of the DTM.

Answer 2

high birthrate, high deathrate, low population.

Question 3

Describe the second stage of the DTM.

Answer 3

high birthrate, deathrate rapidly decreases, population increases.

Question 4

Describe the third stage of the DTM.

Answer 4

birthrate slowly decreases, deathrate slowly decreases, population rapidly increases.

Question 5

Describe the fourth stage of the DTM.

Answer 5

low birthrate, steady deathrate, peak population.

Question 6

Describe the fifth stage of the DTM.

Answer 6

this stage is predicted. birthrate falls under deathrate, steady deathrate, population decreases.

Question 7

What is a population pyramid?

Answer 7

a graph that shows the structure of a population by comparing relative numbers of people in different age groups.

Question 8

What information do population pyramids give?

Answer 8

give info on birthrate, deathrate and life expectancy.

tells how many dependants there are. (below 15 years old and over 65 years old).

Question 9

Describe how a population pyramid looks on LEDCs.

Answer 9

higher number of dependants. pyramid will have a wide base.

sides will decrease as fewer people reach old age.

Question 10

Describe how a population pyramid looks on MEDCs.

Answer 10

have a growing number of elderly dependants.
pyramid will have straight sides or a barrel shape.
pyramid is much taller as more people reach old age.