Objective: To find out how location & climate of tropical deserts are interlinked and to study the biodiversity within.
Starter: Watch the video about Bear Grylls & the Camel to the right. How has this animal adapted to its climate and surroundings? Sheet here
Why do deserts form and why?
Task 1 - Open the worksheet by clicking on the blue tab to the right, between both YouTube videos. Complete the activities set out using the David Attenborough video to help you.
Task 2 - Introducing Timbuktu. Using the Google Map embedded to the right, write down a detailed location (site & situation) of the town of Timbuktu. Check out the photo beneath too!
Task 3 - You have already had practice of completing a climate graph for Toulouse & Belem.
12 Blue Bars = monthly precipitation in MM
Red line = average temperature in °C
Click here to access the climate data for Timbuktu. Construct your climate graph working out the average temperature from the table.
Task 4 - Question Time:
Which is the hottest month?
What is the mean temperature of the hottest month?
Which is the coolest month?
What is the mean temperature of the coolest month?
What is the annual temperature range?
Which is the wettest month?
How much rainfall does the wettest month receive?
Which is the driest month?
How much rainfall does the driest month receive?
Optional task in the booklet below. Can be completed for revision purposes. **IST students need not complete this**
Tsunami of Sand - Deserfication
Objective: To understand how deserts spread, the causes and the implications on vulnerable populations.
Task 1 - You'll need the New Wider World textbook, pages 256-258. Study the embedded presentation underneath too. Click on the blue tab below to access the worksheet. Complete all tasks as set out.
Task 2 - Watch both the YouTube videos to the right. Make notes on different approaches that can be taken to reverse the effects of desertification in the Sahel region of Africa.
Optional Task - Higher Level Extension Video - Watch the video below and take notes on how Allan Savory recommends that we fight desertification and reverse climate change.
Drought Case Study - The Sahel '12
Objective: To build up a case study of a major drought in the Sahel.
Droughts occur when a long period of abnormally dry weather leads to a severe water shortage.
Droughts are also often caused by the activity of humans as well. Human activities that can help trigger droughts include:
i. Widespread cutting down of trees for fuel.
ii. Overgrazing of animals
iii. Construction of a dam on a large river
iv. Climate Change (driven by MEDC's)
Task 1 - Watch the National Geographic video then complete the following questions:
a. Describe the physical processes leading to the occurrence of a drought.
b. Human activities can make the effects of drought worse. Explain how this happens (6) (link to help)
Task 2 - Studying the drought map above carefully, complete the following iGCSE style exam question:
Describe the distribution of severe to exceptional drought events. (2)
Task 3 - Watch the Anatomy of Sahel drought video to complete your map and physical causes of drought section of your case study sheet.
Task 4 - Watch the Explaining the Sahel Drought Problem video report to the right and take notes on the environmental, social and economic effects of the drought on the countries affected.
Link to iGCSE Population - How does a high fertility rate (7 children) contribute to the problems caused by drought in this part of Africa?
Task 5 - How can the risk of drought be minimised in the Sahel? Fill in the relevant section on your case study sheet.