Lecture 7 - Human population Flashcards
1
Q
How is population growth measured?
A
pop growth =
(birth rate +immigration) -
(Death + emigration)
2
Q
How to work out pop growth %
A
% pop growth=
number of deaths per year /
population at start of period x 100
3
Q
What factors affect birth rates?
A
- Economic conditions
- Cultural and religious backrounds
- Social pressures and conditions
- Birth control
- Political factors
4
Q
how to work out birth rate
A
birth rate =
birth in that year /
total population
x 100
5
Q
What factors affect death rate?
A
- age profile - greater old people
- life expectancy at birth
- food supply
- safe drinking water and sanitation
- medical care n education
- natural disasters
- war
6
Q
what is a demographic transition?
A
- classifies pop depends on their birth rate, death rate overall population size and factors
7
Q
what are the age population pyramids
A
- Expanding
- Expanding
- Stationary
- Contracting
