Hot deserts Flashcards
Hot deserts can be found in…
At latitudes 15-30 degrees North and South of the Equator
Hot deserts form in…
Areas of high pressure, these create very dry and hot conditions as moisture in the atmosphere evaporates as the air sinks
Hot deserts receive limited rainfall, less than….
250mm per year
Diurnal temperature range means…
A extreme difference between maximum temperatures during the day, and minimum temperatures at night
Cactus can survive in deserts because….
They can store water for months after rainfall, expanding pleated skin to hold as much rain as possible
Two adaptations that camels have evolved to survive in hot deserts are…
- Two rows of eyelashes to protect from sand storms
- Store fat in their humps which enables them to survive for long periods without eating
The Thar desert has economic opportunities such as…
Tourism, mining, commercial agriculture and solar energy production.
Three key challenges of economic development in the Thar desert are…
- Extreme Temperatures
- Water Supply
- Accessibility
People living in the Thar desert are threatened by….
Groundwater being used up for irrigation, reducing the water available for people and wildlife. Overgrazing, soil erosion and the loss of trees for firewood
Desertification is caused by…..
Overgrazing with non native species like cattle and goats, destroying plants that help to hold the thin soils in place
Climate Change is likely to accelerate desertification because…
Higher temperatures will increase moisture evaporation rates from the soil
The Green Wall is…
A 7500 km long and 15 km wide ribbon of trees that will cross the whole of sub-Saharan Africa
