What rivers flow through the transition zone in Africa?
In this case, the African Transition Zone separates the Sahara Desert environment and peoples of North Africa, from the tropical rain forests of Central Africa. It stretches all the way from the western coast to the eastern coast. Parts of the Nile River also pass through the zone.
What is the transition zone of a river?
Definition of Transitional waters: Zone where seawater is diluted with river water; transition zone between river and sea. Estuaries (including salt marshes) belong to the category of transitional waters. Transitional waters may extend into the adjacent coastal zone.
What is an example of a transition zone in geography?
Transition Zones Some are large, like the boundary between Sub-Saharan Africa and North Africa. Others may be quite narrow and distinct, but they are still transition zones. For example the boundary between North American realm and Middle American realm runs along the US / Mexico border (wwrealm).
Which zone is the transition zone?
The transition zone is part of the Earth's mantle, and is located between the lower mantle and the upper mantle, between a depth of 410 and 660 km (250 to 400 mi).
What countries are in the African transition zone?
The African Transition Zone intersects the East African countries of Ethiopia and Somalia. It is south of Eritrea and Djibouti and north of Uganda, Tanzania, and Kenya. The regions of East Africa and Southern Africa both have countries with coastlines on the Indian Ocean.
What religions are in the transition zone?
Islam is the dominant religion on the north side of the African Transition Zone; Christianity is more dominant to the south. The two religions often clash in the areas where they meet. Traditional beliefs and animist religions are also practiced in the African Transition Zone.
What is a transitional water?
Transitional waters are those waters between the land and the sea and include fjords, estuaries, lagoons, deltas and rias. They often encompass river mouths and so show the transition from freshwater to marine conditions.
Why are estuaries known as transitional zones?
The movement of tides causes coastal areas and estuaries to be either under water or exposed to the air at different times of the day. These characteristics create an environment which is different from both the freshwater river and the sea. These areas are known as transitional waters.
What is found in the zone of transition?
People in the zone of transition (mostly recent immigrants) experience the most anomie and discrimination and thus struggle in adapting to the stresses and demands of their new society. They experience high rates of social disorganization and dysfunction and as a result deviance flourishes.
Which lake in the transition zone is important to sustain the population of the region?
The fresh water of the Nile is a lifeline that enables agriculture and transportation and supports a growing human population in the region. The White Nile originates in Lake Victoria, and the Blue Nile originates in Lake Tana.
What is the transition zone in the ocean?
The waters of most of the world's oceans are stacked like the layers of a cake. Each layer is a different temperature. The top layer is warm, the bottom layer is cold, and the layer in the middle is a transition zone — the region with the biggest change in temperature. That layer is known as the thermocline.
Why is lake Chad in danger?
The lake was once one of the largest water bodies on the planet and due to climatic variability, climate change and human pressure on water resources in its basin over recent decades, the lake has shrunk by 90% from 25000 square kms in 1963 to less than 1500 square kilometers in 2001.
What is it called when freshwater meets the ocean?
Estuaries: Where the River Meets the Sea. Estuaries. Where freshwater rivers meet the salty open sea. There is a lot to love in an estuary.
What are transitional aquatic ecosystems?
Transitional waters include many coastal ecosystems around the world, where the major drivers originate from both marine and freshwater sources, including riverine estuaries and bays, coastal inlets or fjords, and intermittently closed and open lagoons and lakes.
What is the transition zone quizlet?
"Transition Zone" A physical area in which the land undergoes a radical change, like from arid to tropical.
Which religions can be found in the transition zone?
Islam is the dominant religion on the north side of the African Transition Zone; Christianity is more dominant to the south. The two religions often clash in the areas where they meet. Traditional beliefs and animist religions are also practiced in the African Transition Zone.
What happens in the transition zone?
The mantle transition zone (TZ) is the layer between two discontinuities in seismic wave-speed that lie at depths of approximately 410 km and 650 km (Anderson, 1989). These discontinuities are polymorphic phase changes, caused by pressure-induced changes of crystal structure in certain minerals (Anderson, 1967).
What does the transition zone do?
This transition zone influences the extent of whole mantle convection by controlling mass transfer between the upper and lower mantle.
Is the Sahara desert growing or shrinking?
Here's What That Means. The Sahara — the world's biggest hot desert — is getting even bigger. In fact, it is currently about 10 percent larger than it was nearly a century ago, and scientists suggest that climate change is partly responsible.
Which lake in Africa is drying up?
Lake Chad has literally gone from being an oasis in the desert, to being just desert. Spanning the countries of Chad, Nigeria, Niger and Cameroon and bordering the Sahara desert, Lake Chad has contracted by a massive 95% between 1963 and 2001.
Do any rivers flow from the ocean?
Yes, but you need to have some water sink at the lake end. One simple solution is evaporation. Water enters from the ocean into the lake (make it a small trickle of water) and because it's in a hot valley, it evaporates and more flows in.
Which ocean is not salt water?
The major oceans all over the Earth are the Atlantic Ocean, Pacific Ocean, Indian Ocean, Antarctic, and Arctic Oceans. All oceans are known to have salt in a dissolved state, but the only oceans that have no salt content are the Arctic and Antarctic Oceans.
What is a transitional ecosystem?
Transitional ecosystems (estuaries, lagoons, coastal lakes) are complex human–environmental systems where environmental, economic and social issues call for new integrated management perspectives.
What two cultural groups meet in the transition zone?
It is also the transition between the dominance of Islam and the dominance of Christianity and animism. The African Transition Zone cuts through the center of Sudan and divides the country along religious and ethnic distinctions.
What people make up the transition zone?
Herders, farmers, nomads, and city dwellers make up the people of the Transition Zone. While there are relatively few cities, there are several important ones. The ancient city of _______, now known as Tombouctou, is still standing.
How much water is in the transition zone?
In contrast, the mantle transition zone (MTZ) at a depth of 410 to 660 km is considered to be a potential water reservoir because its dominant minerals, wadsleyite and ringwoodite, can contain large amounts of water (up to 3 weight % (wt %)).
What desert is in AZ?
The Sonoran Desert. The Sonoran Desert as currently defined covers approximately 100,000 square miles (260,000 sq. km.) and includes most of the southern half of Arizona, southeastern California, most of the Baja California peninsula, the islands of the Gulf of California, and much of the state of Sonora, Mexico.
Can we turn the Sahara green?
3:038:59How The Sahara will Turn Green – YouTubeYouTube
Which lake turned into desert in Africa?
Lake Faguibine sits in northern Mali, 80 kilometres from Timbuktu. In the 1970s, following increasingly disastrous periods of drought, the lake began to evaporate. For the six lakeside municipalities, the consequences have been catastrophic.
Will Lake Victoria disappear?
Our findings show that the amount of annual rainfall in the Lake Victoria Basin must continue to be at least 75% of current rainfall amounts (105 cm each year) or the lake will disappear. Once the lake has dried up rainfall needs to be at least 131 cm every year to refill the lake.