Back to: PRIMARY SEVEN P7 SOCIAL STUDIES SST TOPICAL QUESTION AND ANSWERS
LAKES OF AFRICA
✓ A lake is a big depression filled with water on the earth’s surface.
✓ A lake is a mass of water in a basin.
Mention any four examples of lakes in Africa.
Note:
✓ Lake Victoria is the largest lake in Africa.
✓ Lake Tanganyika is the longest lake in Africa.
✓ Lake Volta is the largest manmade lake in Africa.
✓ Lake Ngami is a seasonal lake found in Kalahari Desert.
✓ Lake Amboseli is an example of seasonal lake in Africa.
Why Lake Victoria is called an inter-territorial lake?
✓ Lake Victoria is shared by three countries in the same region.
How does Lake Victoria help to promote trade in East Africa?
✓ It has inland ports that handle imports and exports of countries in East Africa.
✓ It promotes water transport.
Name any two inland ports found on Lake Victoria
Note: The teacher draws a map showing inland ports on lake Victoria.
State the types of lakes in Africa.
✓ Rift valley lakes
✓ Fresh water lakes
✓ Lava dammed lakes
✓ Ox-bow lakes
✓ Crater lakes
✓ Caldera lakes
✓ Lagoon
✓ Manmade lakes
Freshwater lakes
What are freshwater lakes?
✓ Fresh water lakes are lakes which were formed by down warping.
How were freshwater lakes formed?
✓ By down warping or sagging.
Note: Freshwater lakes are also called;
✓ Plateau lakes
✓ Natural lakes
✓ Down warped lakes
✓ Depression lakes
✓ Basin lakes
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Mention the examples of freshwater lakes in Africa
✓ Lake Victoria
✓ Lake Kyoga
✓ Lake Wamala
✓ Lake Amboseli
✓ Lake Chad
✓ Lake Bagweru
State any four characteristics of freshwater lakes.
✓ They are wide.
✓ They are shallow.
✓ They have fresh water.
✓ They are irregular in shape.
✓ They have swampy surroundings.
✓ They have both outlets and inlets.
✓ Note: Lake Malawi is the meeting point of both Western and Eastern arms of rift valley.
State any four characteristics of rift valley lakes.
✓ They are long.
✓ They are deep.
✓ They are narrow.
✓ They have salty fish.
✓ They have no outlets.
✓ They have salty rocks.
✓ They have salty water.
✓ They have irregular shapes.
Give two reasons why rift valley lakes have salty water.
✓ They have no outlets.
✓ They have salty rocks underground.
Give one reason why fishing is not commonly carried out on rift valley lakes.
✓ Rift valley lakes have salty water which does not favour fish.
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