Unit notes and practice questions
Everything here is for unit 1 of the Grade 10 Geography textbook: what the chapter covers, the short notes, practice questions with their answers, and the lesson video where one exists.
The cards filed under this chapter on the Grade 10 Geography page. Open one at a time.
When you use it
Use this when identifying whether Lake Victoria is structurally part of the East African Rift Valley graben floor.
Watch out
Lake Victoria is not inside the rift valley. It occupies a depression between the eastern and western rifts.
Drafted from Grade 10 Geography, pages 1-22, then checked twice before it went up
| Major Landform Region | Physical Regions |
|---|---|
| African Alpine System | Atlas Mountains |
| African Massif | The Sahara, The Sahel, The Savanna, The Tropical Rainforest |
| East African Highlands and Rift System | The Rift Valley and Great Lakes, Ethiopian and Eritrean Highlands |
| Southern Africa Platform | Mountains and desert systems of Southern Africa |
When you use it
Use this to classify Africa into its four major landform divisions and their physical subregions.
Watch out
Do not place the Sahara or the Sahel under the Alpine system. They belong to the African Massif.
Drafted from Grade 10 Geography, pages 1-22, then checked twice before it went up
| Surface Type | Description | Dominant Material |
|---|---|---|
| Erg | Sand sea | Reddish sand dunes |
| Reg | Desert pavement | Pebbles on flat sand sheets |
When you use it
Use this to distinguish between the two distinct desert surface types found in the Sahara.
Watch out
Do not confuse erg with reg. Erg is a sand sea with dunes, while reg is a pavement of pebbles on sand.
Drafted from Grade 10 Geography, pages 1-22, then checked twice before it went up
10 multiple-choice questions written against this chapter, each with its answer and the reason. Try one before you open the answer.
Question 1
What are the three major types of landforms on the Earth's surface?
Answer: B Mountains, plateaus, and plains
Why
Mountains, plateaus, and plains are the three major types of landforms. Minor landforms include hills, gorges, valleys, and basins.
Question 2
Which ocean is both the largest and the deepest, covering one third of the Earth's surface?
Answer: C Pacific Ocean
Why
The Pacific Ocean is both the largest and the deepest ocean, covering one third of the Earth's surface.
Question 3
How many recognized sovereign states are there in Africa?
Answer: C 54
Why
According to the textbook, the continent of Africa is home to 54 recognized sovereign states.
Question 4
What term describes a great sand sea of reddish sand dunes in the Sahara Desert?
Answer: B Erg
Why
An erg is a great sand sea of reddish sand dunes weathered from sandstone. A reg is a desert pavement of pebbles on flat sheets of sand.
Question 5
The Abbay Gorge cuts down about how deep between the towns of Goha Tsiyon and Dejen?
Answer: B 1000 m
Why
The textbook states that the deep Abbay Gorge cuts down about 1000 m deep between Goha Tsiyon (in North Shewa) and Dejen (in East Gojam).
Question 6
The Himalayan Mountains were formed when the Indian tectonic plate collided with which plate?
Answer: C Eurasian plate
Why
The Himalayas were formed about 40 to 50 million years ago when the Indian tectonic plate collided with the Eurasian plate.
Question 7
Africa covers what percentage of the Earth's total land area?
Answer: C 20%
Why
Africa covers 6% of the Earth's total surface area and 20% of its land area, while hosting about 16% of the world's population.
Question 8
What does the Arabic word sahil (Sahel) mean?
Answer: B Shore
Why
Sahel comes from the Arabic word sahil, which means "shore" or edge of the Sahara Desert.
Question 9
Why are soils in the African tropical rainforest generally acidic and nutrient poor?
Answer: B Due to extreme chemical weathering and heavy leaching from frequent rainfall
Why
Frequent and heavy rainfall in the tropical rainforest causes extreme chemical weathering and leaching, making the soils acidic and nutrient poor.
Question 10
Which statement correctly describes Lake Victoria according to the textbook?
Answer: B It lies in a depression between the eastern and western rifts rather than in the rift valley itself.
Why
Lake Victoria is the largest lake in Africa. It is not inside the rift valley itself, but occupies a depression between the eastern and western rifts formed by their uplift.
The app holds 12 questions on this unit, marked as you go. These are the first 10.
Unit 1 runs from page 1 to page 22 of the Ministry of Education edition.
Ministry of Education edition, English, 204 pages
Temari turns this chapter into timed practice and marks it as you go, with an AI tutor to explain anything that did not land.
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