2 ¾ HRS
THIKA PROVINCIAL SCHOOLS EXAMINATIONS 2011
TIME 2 ¾ HRS
INSTRUCTIONS TO CANDIDATES
- This paper consists two sections A and B.
- Answer all questions in section A
- In section B answer question 6 and any other two questions from the section.
Answer all questions from this Section.
1(a) State three causes of volcanicity. (3mks)
(b) The diagram below shows a composite volcano. Name the features marked P Q and R.
|Layers if the pyrocrasts|
2(a) Differentiate between weathering and mass wasting. (2mks)
(b) State three physical factors that influence the rate of mass movement. (3mks)
3(a) Differentiate between plutonic and volcanic rocks. (2mks)
(b) Give an example in each of the following types of igneous rocks.
(i) Plutonic (1mk)
(ii) Hypabyssal (1mk)
(iii) Volcanic (1mk)
4(a) The diagram below shows the formation of features resulting from faulting. Name the parts marked S, T and U. (3mks)
(b) Name three escarpments found within the Gregory rift system. (3mks)
5(a) Define the term “Estuary”. (1mk)
(b) The diagram below shows a dealt. Name the features marked V, W and X. (3mks)
Answer question 6 and any other TWO questions from this section.
6. Study the map of Homa Bay (1:50,000) sheet 129/2 provided and answer the following questions.
(i) Give the six figure grid references for lala Dam. (2mks)
(ii) Convert the scale used in the map to a statement scale. (2mks)
(iii) Give the magnetic variation on the map. (1mk)
(i) Using a vertical scale of 1cm represents 100m. Draw a cross section between grid references
6033 to 6633. On it name and mark the following. (3mks)
(ii) Name the sub locations traversed by the cross section. (4mks)
(c) Describe the relief of Central Kanyada division of the area covered by the map. (4mks)
(d) Students of Kamsama School (grid square 4643) carried out field study on olambwe East Location.
(i) Name three physical features they may have identified. (3mks)
(ii) State three follow up activities they might have done after the fieldwork. (3mks)
7(a) What is folding? (2mks)
(b) (i) The following map shows the location of fold mountain ranges of the world.
Name the mountain ranges marked P, Q, R, S and T. (5mks)
(ii) With the aid of a well labeled diagram describe how a recumbent fold is formed. (6mks)
(c) Apart from Fold Mountains name other main land forms resulting from folding. (3mks)
(d) Explain four ways in which fold mountains influences climate. (8mks)
(i) What is an isothermal layer? (2mks)
(ii) Name three isothermal layers found in the atmosphere. (3mks)
(b) The graph below shows climatic characteristics of a station in Kenya. Use it to answer the following questions.
(i) Calculate the annual range of temperatures. (2mks)
(ii) Calculate the annual total amount of rainfall received at the station. (2mks)
(c) Describe six climatic conditions experienced in the Kenyan highlands. (6mks)
(i) The map below shows the climatic regions of Kenya. Name the regions marked P Q
(ii) Give five development activities that the Kenyan government could initiate sustainably in the region marked P.
(iii) Explain how the following factors influence the climate of a region.
(a) Aspect. (2mks)
(b) Ocean currents. (2mks)
9 (a) (i) What is a lake?
(ii) Name two examples of Lakes in Kenya formed by tectonic movement. (2mks)
(b) (i) With the aid of well labeled diagrams describe how lake paradise in Kenya was formed. (8mks)
(ii) Name two examples of Lakes in Africa, outside East Africa, that were formed in a
similar way. (2mks)
(c) Explain four negative effects which human activities have on lakes. (8mks)
(d) Your Geography teacher has asked you to carry out a field study on a lake near your school.
(i) Formulate two hypothesis of the Study. (2mks)
(ii) State any three methods you would use to collect the data. (3mks)
(i) Give two examples of hot deserts in Africa. (2mks)
(ii) State three human activities that cause aridity and desertification. (3mks)
(b) With the aid of well labeled diagrams, describe how the following features are formed.
(i) Zeugen (7mks)
(ii) Barchan (7mks)
(c) Explain three processes through which transport its load. (6mks)