How has the population changed over time Starter

How has the population changed over time? Starter (Jan 2011) 1. Describe how relief can affect population density (4 marks) 2. Outline other factors that would affect population density. (3 marks)

By how much do you think the worlds population will have changed by the end of the lesson? Answers on a piece of paper

How has the population changed over time? By how much do you think the population would have changed over the course of this lesson? Copy these questions down: 1. What was the pop 1000 y. a? 2. Where were the majority living 1000 y. a? 3. When do we reach 1 billion? 4. What slows the leak? 5. How long did it take to get from 1 bil to 7 bil? 6. What does the UN say?

http: //www. youtube. com/watch? v=Vc. SX 4 yt Efc. E&feature=youtube_gdata_player&safe =active • • • What was the pop 1000 y. a? Where were the majority living 1000 y. a? When do we reach 1 billion? What slows the leak? How long did it take to get from 1 bil to 7 bil? What does the UN say?

When discussing population change analogies can be a useful way of ‘getting your head around’ key concepts How could bath tubs be used to describe population change? Clue: think about all the functions, e. g. plug hole etc. Birth Rate: the number of babies born per 1000 members of the population each year. Natural Change: the difference between birth rate and death rate. If BR is higher than DR, population will increase, vice versa if DR is higher than BR. Death Rate: the number of people who die per 1000 members of the population each year.

Draw your own population boom graph. Add on the annotations Measuring Population Change

1. 2. 3. 4. Calculating Natural Change = Birth Rate – Death Rate This will then give the natural change (usually a positive number but occasionally negative) To convert this into a percentage move the decimal place one to the left. (e. g. 1. 3 = 0. 13%) Country Population Birth Rate (per 1000) Death Rate (per 1000) Bangladesh 153 546 901 28. 68 8 Burundi 8 691 005 41. 61 12. 91 Denmark 5 484 723 10. 71 10. 25 Germany 82 369 548 8. 18 10. 80 Haiti 8 924 553 35. 69 10. 15 Iraq 28 221 181 30. 77 5. 14 Niger 13 272 679 49. 62 20. 26 Turkey 71 892 807 16. 15 6. 02 Uzbekistan 28 268 440 26. 45 7. 62 Venezuela 26 414 815 20. 92 5. 10 Natural Change % Natural Change Which country has the highest natural change? What will be the new total population of that country by the end of the year? (divide by 100 then x by (100 + % change)) Which country had the lowest natural change? Are there any differences in levels of development between the countries with high levels of change compared to those with lower change rates? If so what?

June 2011

Guess The Key Term

Case Studies of Population Change Around The World Use p. 142 to collect comparative data on the populations of the countries listed on the map below

Some Of The Factors That Affect Birth and Death Rates Government Policies

Mapping Population Change Key q Countries with change less than 1% q Countries with change between 1. 01% and 2% q Countries with a change greater than 2. 01%

Extra What would be the consequences if the world’s population doubled overnight?

By the end of lesson… • All of you will be able to NAME one factor that can affect birth/death rates. • Most of you will be able to COMPARE the recent population changes of at least 2 countries. • Some of you will be able to IDENTIFY GLOBAL PATTERNS of high/low population growth rates.