Population

Question 1

Crude birth rate (CBR)

Answer 1

the number of births per thousand individuals in a population per year. = (tn birth / T population ) X 1000

Question 2

Crude death rate (CDR)

Answer 2

the number of deaths per thousand individuals in a population per year. = (Tn bith / T population) x 1000

Question 3

Natural increase rate (NIR)

Answer 3

the rate of human growth expressed as a percentage change per year. = (CBR-CDR) / 10

Question 4

Doubling time (DT)

Answer 4

the time in years that it takes for a population to double in size. = 70/ NIR

Question 5

Total fertility rate (TFR)

Answer 5

the average number of children each woman has over her lifetime

Question 6

Population pyramids: A wide base indicates

Answer 6

high birth rate

Question 7

Population pyramids: A narrow base indicates

Answer 7

low birth rate

Question 8

Population pyramids: straight or near vertical sides indicate

Answer 8

low death rate

Question 9

Population pyramids: concave slopes characterize

Answer 9

high death rate

Question 10

Population pyramids: bulges in the slope suggest

Answer 10

baby booms or high rates of immigration or in-migration

Question 11

Population pyramids: slices in the slope suggest

Answer 11

emigration or out-migration or age-specific or sex-specific deaths

Question 12

DTM stage 1 is characterised by

Answer 12

High BR, High DR, stable or slow population increase

Question 13

DTM stage 3

Answer 13

BR falling slowly, DR falling slowly, Population increase slsows doe/wn

Question 14

DTM stage 4

Answer 14

BR low, DR low, Population stable

Question 15

DTM stage 5

Answer 15

BR low, DR low, population decreases

Question 16

NIR 1 % =DT?

Answer 16

70 years

Question 17

NIR 0,5 % =DT?

Answer 17

140 years

Question 18

NIR 2 % = DT?

Answer 18

35 years