World population clock

7 billion

ESS January 9thCycles test/IAs – see me during tutorial Tuesday -Thursday -Friday –

Field trip forms and money

Field trip – Mangroves and Population

This term – any work may be assessed

The course

Topic 1: Systems and models

Topic 2: The ecosystem (2.6 and 2.7 to do)

Topic 3: Human population, carrying capacity and resource use

Human population, carrying capacity and resource use

3.1 Population dynamics

3.1.1: Exponential growth3.1.2: Population change• CBR• CDR• Fertility• Doubling time• Natural increase

3.1.3: The DTM and population pyramids3.1.4: Models to predict population growth

Term Meaning

1. Population pyramid

2. Crude birth rate (CBR)

3. Crude death rate (CDR)

4. Fertility rate

5. Doubling time

6. Natural increase

7. Demographic transition model (DTM)

8. Life expectancy (LE)

9. Infant mortality rate (IMR)

10. Exponential growth

11. Limiting factors

12. Total fertility rate

13. Carrying capacity

The number of years a person is expected to live to, on average

A graph which shows the age and sex structure of a country or area

The length of time in years it takes for the population to double

The number of deaths each year for every 1000 people in that country

The number of babies that die before their 1st birthday, out of every 1000 babies born in a year

The total number of children a woman has over her lifetime

Things in the environment that reduce or stop population growth

The number of babies born each year for every 1000 people in the country

A graph which shows changes in CBR, CDR and total population over time

Where the rate of growth increases as time goes on (i.e. a graph has a curved line not a straight one)

The number of births for every 1000 women of childbearing age

The maximum number of people an area can support sustainably

The difference between the crude birth rate and the crude death rate (CBR – CDR) /10 (divided by 10 to give a %)

If the world were a village

How has the world’s population changed over time?Billion people Year1 1804

2 19273 1960

4 1974

5 1987

6 1999

7 2011

Draw a very quick line graph to show this information.1. How many years did it take the world’s population to increase from 1 billion to 2 billion?2. 2 billion to 3 billion?3. 3 billion to 4 billion?4. 4 billion to 5 billion?5. 5 billion to 6 billion?6. 6 billion to 7 billion?7. What is your estimate for the number of years to increase from 7 billion to 8 billion?8. What was the doubling time for 1 to 2 billion and 2 to 4 billion?

9. What evidence is there in the graph above that the world’s population growth may slow down?

10. In which 50 years did most growth take place?11. Is most of the growth in MEDCs or LEDCs?12. True/false: The rate of population growth has been increasing with time.

Why has there been a population explosion?

Why has there been a population explosion?

Birth rate Death rate

If the BR is greater than the DR we have population growth (natural increase).

The Demographic Transition Model

• Each take one sheet – High BR, High DR, Low BR, Low DR – use these to complete the following table.

Die young: High death rate Lots of children: High birth rate

Live to be older: Low death rate Few children: Low birth rate

Demographic Transition Model

• Deepta aged 9 works on a farm instead of going to school

• Parents start to think more about family planning

• Shakira has 7 brothers and sisters

• There are more Golden Weddings

• A mother sobs over the grave of the last of her 6 children who died in a typhoid epidemic

• A new highway has just been built connecting 2 towns to the port

• Many more houses are being built

• The Public Health Inspector smiles as the building of the new sewers are completed

• Fewer people share a bedroom

• Grandparents are rare

• People are encouraged to migrate to other countries to find employment

• Cheryl is promoted to Manager of the bank where she works.

The Philippines: population informationPopulation: 100MDensity: 300 /km2

There are ……………………. in The P. and in every square kilometre of land there are, on average, ………. people. It is a problem when a country is densely populated because…

0-14: 35% This means …………. of all of the people in The P. are under 15. It means the government needs to provide lots of…

15-64: 61% Nearly 2/3 of the population are working age. These people ‘provide’ for the ……………………. and the ……………….. by having jobs and paying taxes.

>65: 4% There are not many / many old people in The P. People may die young because….

Population growth: 1.9%

This means that every year the population of The P. grows by 1.9%. This adds approximately ………………..……. people to the country each year. This is a problem because…

Birth rate: 25/1000/yr

This means that if there were only 1000 people in The P. 25 would be born each year. However there are ……………………………… people in The P. which means ……………………. babies are born every year.

Infant mortality rate: 19/1000

This means that out of every 1000 babies born …….. die before they are 1. This is high. It may be because…

Life expectancy: 72 years

This means, on average, people…

Net migration: - 1.3%

This means each year 1.3% of the population leave The P. That means ………………………… people leave. This may be because… It is a problem because the people that leave are often…

Big understanding:

What are the population issues facing The Philippines? (8 marks)

The PhilippinesUse the CIA website to find out about three countries’ population data. LEDC / MEDC / Philippines

Fill in your answers on the worksheet that follows – round all figures off to a sensible number

COUNTRY Generally LEDC: MEDC: PhilippinesTotal population 0-14 Low = good 15-64 65 + High = good Median age High = good Population growth rate

Low = good

Birth rate Low = good Death rate Natural increase (BR-DR)

Low = good

Migration (+ means into the country, - means out of the country)

% living in cities Infant mortality Low = good Life expectancy High = good

At the end: colour code: dark red for worst, green for best, orange/yellow for middle

The Philippines: watch the youtube clip “Sex and Religion

”

Questions to follow

The Philippines: sex and religion 1. Manila is fast growing / slow growing.2. What products can be bought at the stall? What are they used

for?3. How many illegal abortions take place each year?4. What is one side effect of these abortions? 5. Why do people blame the church for The Philippines’ population

growth?6. Are contraceptives given out by public health clinics?7. Out of all the pregnant women in Manila, what proportion of the

women wanted to get pregnant?8. How large is the family in the film? What are the knock-on effects

of this large family size on living space, poverty and education?

IA: Population issues in The Philippines1. How old are you?

2. How many children have you had?

3. Have any of your children not survived?

4. How children do you want to have in total?

5. What is your total monthly family income?

6. How many children did your parents have?

7. Area: Batangas / Manila

Choose your title:How have birth rates changed over time in The Philippines?

Is there a difference in birth rates between rural and urban areas in The Philippines?

Is there a correlation between birth rates and income levels in The Philippines?

Is there a correlation between infant mortality rates and wealth in The Philippines?

Are IMR affected by whether you live in a rural or an urban area?

Get questionning…

16 people AB – 3 each pair in Manila, 3 again in Batangas

17 people EH – as above

Aim: 50 in each area

Give all questionnaires to KareninaRecording data: for ABs class: Reggie and Karenina for EHs class:

? Abortion in The Philippines

• Watch first