# What does this special graph tell us? - PowerPoint PPT Presentation

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What does this special graph tell us?. The red line shows how the BIRTH RATE has changed and the green line shows how the DEATH rate has changed . . DEMOGRAPHIC TRANSITION – literally means how population has changed and that it is passing through stages of change. .

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What does this special graph tell us?

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### What does this special graph tell us?

The red line shows how the BIRTH RATE has changed and the green line shows how the DEATH rate has changed.

### DEMOGRAPHIC TRANSITION – literally means how population has changed and that it is passing through stages of change.

This axis shows numbers of both births and deaths so birth rates and death rates. The green and red lines are drawn from this axis.

The area in the middle shows how much the population has grown.

This axis shows that the change in population is over time and over time it passes through 4 stages.

It has a TOTAL POPULATION LINE.

### So what happens during STAGE ONE? WHY?

Remember on this graph the dotted line is birth rate, the unbroken line is death rate and the dashed line is total population.

### So what happens during STAGE TWO? WHY?

Remember on this graph the dotted line is birth rate, the unbroken line is death rate and the dashed line is total population.

### So what happens during STAGE THREE? WHY?

Remember on this graph the dotted line is birth rate, the unbroken line is death rate and the dashed line is total population.

### So what happens during STAGE FOUR? WHY?

Remember on this graph the dotted line is birth rate, the unbroken line is death rate and the dashed line is total population.

http://www.geographyalltheway.com/ib_geography/ib_population/ib_demographic_transition_model.htm

### So how does the world fit into this?

Rainforest Tribes Sri Lanka China Japan Sweden?

(LEDC’s) (MEDC’s)

The whole picture!