how are the following linked to population?. l.o. 1: to identify what affects birth and death rates...
TRANSCRIPT
How are the following linked to population?
L.O. 1: To identify what affects birth and death rates
How does population change?
Copy the following definitions into your books
Birth RateThe number of births per 1,000 in the
population.
Death Rate
The number of deaths per 1,000 in the population.
Natural increase
When there are more births than deaths therefore the population increases
How many people can live on planet earth?
How does the World’s population change?
Births = deaths no population change
Births < deaths natural decrease
Births > deaths natural increase
Can you remember the DTM model
• Have a go at drawing it on your whiteboard!
• Without using your books!!!!!
• To identify the reasons why birth and death rates change
• To explain the reasons for these changes
• To annotate the DTM with 7-12 labels explaining the changes in BR and DR
What causes changes in births and deaths?
• Food shortages• Good harvest• Improved water supply• Children are needed to work• New hospitals• Poor health care• Wars• Birth control• Tradition for large families
So what causes changes in births and deaths?
LIST 1• A terrible war breaks out• Everyone gets better
food to eat• A deadly disease
spreads• There is a severe famine• More hospitals and
doctors are provided• Birth control pills are
invented• More women and men
get good jobs
For each change in list 1, choose the likely result from list 2. Write your answer as a full sentence
LIST 2
1. death rate falls
2. Death rate rises
3. Birth rate falls
4. Birth rate rises
5. No effect on births or deaths
Does anything surprise you about this graph?
Does anything worry you?
What about stage 5?
• What is happening in stage 5?
• Why has this happened?
• What are the impacts of this change?