GEOGRAPHY PAPER 1 FORM FOUR

POST MOCK 2025

SEPTEMBER/OCTOBER

TIME: 2 ¾ HRS

Instructions to Candidates

Answer all the questions in Section A.

In Section B, answer question 6 and any other questions from the remaining questions.

Candidate should check to ascertain that all pages are printed and no questions are missing.

For examination use only

Maximum Score Candidate Score

Section A

Question 6

Question 7

Question 8

Question 9

Question 10

TOTAL 100%

SECTION A – 25 MARKS

1.
(a) What is soil Catena? (2 marks)

(b) State three characteristics of desert soil Catena. (3 marks)

2.

(a) Give two divisions of physical geography. (2 marks)

(b) The diagram below shows the centrality of geography as a science. Use it to answer the question that
follows:

(Diagram with Geography in the center and circles labeled A, B, and C)

Name the discipline A, B, and C. (3 marks)

3.

(a) Define the term rocks. (2 marks)

(b) Give the original rock in each of the following metamorphic rocks:

Gneiss

Slate

Marble (3 marks)

4.

(a) Differentiate between isostacy and isostatic adjustment. (2 marks)

(b) Give one fold mountain in each of the following:

Africa
North America

Asia (3 marks)

5.

The table below shows the annual rainfall (mm) and temperature (°C). Use it to answer the questions that
follow.

Month J F M A M J J A
S O N D

Rainfall 270 220 300 480 500 200 180 200

Temperature 26 24 23 20 22 22 24
25 25 23 25 28

(a) Calculate total annual rainfall. (2 marks)

(b) Calculate the mean monthly rainfall. (2 marks)

(c) Calculate the annual range of temperature. (1 mark)

SECTION B

Answer all questions in Question 6.

Study the map of Busia 1:50,000 (Sheet 101) provided and answer:

6.

(a)
(i) Convert the ratio scale of the map extract into statement scale. (2 marks)

(ii) What is the magnetic declination? (1 mark)

(iii) Identify two dominant vegetation types shown in the area covered by the map. (2 marks)

(b) Draw a square 10 cm by 10 cm to represent the area covered to the West of Easting 30 and North of
Northing 40. On the square, mark and label:

(i) An international boundary

(ii) An air photo principal point

(iii) River Sio (4 marks)

(c)

(i) Describe the relief of the area covered by map. (5 marks)

(ii) Name two methods of representing relief. (2 marks)

(d) Citing evidence from the map, state three functions of Funyula town. (6 marks)

(e) State two importance of study using a map. (2 marks)

7.

(a)

(i) Define the term tide. (2 marks)

(ii) Name three submergent features of submerged lowland coasts. (3 marks)

(iii) Give any two types of tides. (2 marks)

(b) Explain any three processes of wave erosion. (6 marks)

(c) Explain four positive effects of coastal landforms to human activities. (8 marks)
(d)

(i) Differentiate between a swash and backwash. (2 marks)

(ii) List two features resulting from wave deposition. (2 marks)

8.

(a)

(i) What is a river? (2 marks)

(ii) List three features of young stage. (3 marks)

(iii) State four conditions favouring the formation of a delta. (4 marks)

(b) Explain any three processes of river erosion. (6 marks)

(c) Explain any three types of drainage patterns. (3 marks)

(d) State four ways in which rivers are significant to human activities. (4 marks)

9.

(a)

(i) Define vulcanicity. (2 marks)

(ii) List three intrusive features of vulcanicity. (3 marks)

(b) Describe how the following features are formed:

Crater (4 marks)

Hot springs (4 marks)

Caldera (4 marks)
(c) Explain four negative effects of vulcanicity to human activities. (8 marks)

10.

(a)

(i) Define the term rocks. (2 marks)

(ii) Give one example of each of the following:

Hypabyssal rocks

Volcanic rocks

Chemically formed sedimentary

Metamorphic rocks (4 marks)

(b)

(i) State four causes of metamorphism of rocks.

(ii) Give the metamorphic rock resulting from each of the following rocks:

Granite

Sandstone

Clay

Shale
Augite (5 marks)

(c) Explain five significance of rocks to the development of economy of Kenya. (10 marks)

SECTION A 25 MARKS

(a) What is soil degreation? (2marks)

(b) State three importance of humus in the soil (3marks)

(a) Define the term equinox (1mark)

(b) Study the diagram bellow and used it to answer the question that follow

(A diagram of solar eclipse with sun, moon, and Earth)

Sun’s rays → ☀ → M → X → N

(i) Name the types of eclipse shown above

(ii) Identify the type labelled part M, X and N

Bellow is the internal structure of the atmosphere

(Diagram showing atmospheric layers with labels A, B, X, Y, Z and Troposphere)

(a) Name the layer marked A and B

(c) State any two characteristics of troposphere

(a) Define Continental Drift theory

(b) Give three evidances supporting Continental Drift theory.

(a) What is minerals?

(b) Give one example of the following rocks:

Hypabyssals

Intrusive igneous

Metamorphic

SECTION B 75 MARKS

Study the map of Oyugis 1:50,000 (Sheet 130/1) provided and answer the question that follow

6(a) (i) What type of map is Oyugis (1mark)

(ii) Give two scales that have been used in the map extract (3marks)

(iii) Measure the length of the township boundary shown on the map. Give your answer in kilometers (2marks)

(iv) Calculate the area covered by Hadera forest. Give your answer in square kilometers (2marks)

(b) (i) Identify the methods that have been used to represent relief of the area (2marks)

(ii) Name the physical features found in grid square 6842 (2marks)
(c) Describe the drainage of the area covered by the map (6marks)

(d) (i) Give the longitudinal & latitudinal extent of the area covered by the map (2marks)

(ii) Citing evidence from the map, give three reasons why the area covered by the map is suitable for
agriculture (6marks)

7(a) (i) Differentiate between ocean and Shore line (2marks)

(ii) List three types of islands (3marks)

(iii) Name two types of waves (2marks)

(b) (i) State three condition necessary for the formation of coral polyps (3marks)

(ii) With aid of a well labelled diagram describe how the following features are formed (15marks)

Wave-cut platform

Tombolo

Spits

Cliff

8(a) (i) What is river capture? (2marks)

(ii) List three features of river capture (3marks)

(iii) State three condition necessary for river capture to occur (3marks)

(b) Explain any three process of river transportation (6marks)

(d) Name any two types of drainage system (2marks)

(i) State any two characteristics of a river in the old stage (5marks)

9(a) (i) Differentiate between Magma and lava (2marks)

(ii) State three ways in which a caldera is formed (3marks)

(b) Describe how the following features are formed

Lava plateau (4marks)

Composite volcano (4marks)

A sill (4marks)

(c) Explain four positive ways in which volcanic features influence human activities (8marks)

10(a) (i) Define the term mineral (2marks)

(ii) Explain the following characteristics of mineral:

Tenacity (3marks)

Colour (2marks)

Lustre (2marks)
Shape (2marks)

(b) (i) State four differences between plutonic rocks and volcanic rocks (4marks)

(ii) Explain three ways sedimentary rocks are formed (9marks)

(iii) State three reasons why sedimentary rocks are wider spread in the coasts (4marks)