4 the 4 types of desert.ppt

1. Where are deserts found and why?
Satellite image of Earth from Space:
?
Where do we find deserts
Atacama
Sahara
Arabian
Australian
Sonora
Gobi
Kalahari
The Great
Basin
Antarctica

2. Learning Objectives
All can describe the climatic conditions
shared by all deserts and the global
pattern to where deserts are commonly
found.
Most can explain why the ‘trade wind
deserts’ exist.
Some can identify and understand three
other types of desert.

3. Where are deserts found and why?
There are 4 main reasons that a region may be a desert but it is always to
do with factors that limit the amount of rainfall to the area.

A general pattern can be seen
. Many deserts are found in the sub-tropics
between 10 and 30° N and S of the equator. Why is this?

Why are most deserts found between
10 40 ?
°and ° N and S of the equator
Trade Winds Convectional
Rainfall
Equator Evaporation
Solar radiation Tropics
Condenses Rises
High/Low Pressure Sinks

4. The Four types of desert
•The Trade Wind
Desert
•The Rain-Shadow
Desert
•The Coastal Desert •The Monsoon Desert

5. Learning Objectives: RECAP
All can describe the climatic conditions
shared by all deserts and the global
pattern to where deserts are commonly
found.
Most can explain why the ‘trade wind
deserts’ exist.
Some can identify and understand three
other types of desert.