Life in the Sahara and Sahel
Terms in this set (21)
Where do most people of the Sahara live?
near a desert oasis
Did the Sahara have a much wetter or dryer climate a thousand years ago?
Over time is the desert slowly expanding or decreasing?
What do trade winds do?
Remove moisture from the ground
How have pastoral nomads adapted to life in the Sahel?
wandering in search of water and food for their animals
How do the Tuareg protect themselves from the burning sun?
They wear long, loose clothing and cover their heads and faces
The Nile and the Niger rivers flow through what desert?
Where is the Sahel desert located?
Southern edge of the Sahara
How have desert plants adapted to unpredictable rainfall?
They sprout quickly after a rain and then set seed and die, they send roots deep into the ground to find water, they have small waxy leaves that lose little moisture
What is one way in which humans have contributed to desertification?
Farmers planted cash crops that depleted the soil faster
Why are most oasis settlements small?
Their size is limited by their water supply
How does the system known as shifting agriculture help marginal lands?
It gives worn-out fields a chance to recover
What is the most important and most common oasis plant?
What problem might a community face if too many palm groves are created in the desert?
The underground streams that support the oasis may run dry
What do drivers in the challenging Dakar Rally have to deal with?
over shifting sand dunes and across dry riverbeds and through sandstorms and scorching heat
What does the old saying, "Nighttime is the winter of the desert" mean?
Temperatures at night drop below freezing
How are oases formed?
Springs bubble up to the surface from streams beneath the ground and in low spots, the land dips down to meet an underground stream and people create wells using drilling machines or digging by hand
Drought is to desertification as hunger is to...
What are the three most common landforms in the Sahara?
Ergs, regs, and hamadas
How have the Tuareg adapted to life in the southern Sahara and Sahel?
They raise animals and live a nomadic lifestyle
What process increases the severity of sandstorms like this one off the western coast of Africa?
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