312/1 GEOGRAPHY PAPER 1 JULY/AUGUST-2015 TIME: 2 ¾ HOURS Kenya Certificate of Secondary Education (K.C.S.E.) 312/1 GEOGRAPHY PAPER 1 TIME : 2 ¾ HOURS INSTRUCTIONS TO CANDIDATES This paper has two sections A and B. Answer all questions in section A. Answer question 6 and any other two questions from section B.. Candidates should answer the questions in English. This paper consists of 4 printed pages. Candidates should check to ascertain that all pages are printed as indicated and that no questions are missing. © 2015 Khwisero sub-county form four 2015 1 Geography 312/1 TURN OVER SECTION A ANSWER ALL QUESTIONS IN SECTION A 1. 2. (a)Define the term terrestrial radiation (2marks) (b)Mention three characteristics of nimbus cloud (3marks) (a)Give three examples of mechanically formed sedimentary rocks (3marks) (b) State TWO changes that occur in sedimentary rocks when they are subjected to intense heat and pressure 3. 4. 5. (a)What is orogenesis (2marks) (b) Explain the plate tectonics theory (4marks) (a) Using a well labelled diagram distinguish between stalactite and stalagmite (2marks) (b)Name three surface features present in kart landscape (3marks) (a) State TWO human activities that lead to formation of lakes (2marks) (b) Mention TWO main threats to the existence of lakes in Kenya (2marks) SECTION B ANSWER QUESTION 6 AND ANY OTHER TWO QUESTIONS IN THIS SECTION 6. Study the map of Migwani (1:50,000) and answer the questions (a)(i) What is the latitudinal extend of the area covered by the map (2marks) (ii) Give the approximate height of Kyulu hill (2marks) (iii) Measure the length of the road E 728 from the junction at Mutitu to end of the map give your answer in Kilometers. (2marks) (b) Citing evidence from the map state functions of Migwani town. (3marks) (c )(i) Apart from hills name three other relief features in the area covered by the map (3marks) (iii) Describe four factors that can favor cattle rearing in Migwani area (8marks) (d) Draw a rectangle measuring 10 centimeter by 16cm to enclose the area bounded by Easting 08 and 13 and northing 62 and 70. On it mark the following -River Ikoo -Water Tank -School (5marks) (e) In which county is Migwani area © 2015 Khwisero sub-county form four 2015 (2marks) 2 Geography 312/1 TURN OVER 7. (a) Define the term faulting (2marks) (b)(i) Draw a well labelled diagram showing a reverse fault (4marks) (ii) Describe how the rift valley may have been formed due to anticline arching theory 8. 9. (5marks) (c ) Explain any five effects of faulting on the physical environment (10marks) (d) Name four features associated with the Gregory Rift Valley of Kenya (4marks) (a)State three climatic elements that influence the vegetation of a place (3marks) (b) Describe the general characteristics of natural forests (8marks) (c )Explain four adaptive characteristics of desert vegetation (8marks) (d)(i) Mention three reasons why the mountain top has no vegetation (3marks) (ii) State three factors that have contributed to decline of natural grasslands in Kenya. (3marks) (a)(i)The diagram below shows an extrusive volcanic landform G F Name the part marked F and G (2marks) (ii) Describe how the above volcanicity landform is formed (6marks) (b) Explain five negative effects of volcanic activity in Kenya (10marks) (c ) You are planning to carry –out field study in an area affected by volcanicity (i)State three objectives for your study (3marks) (ii)Mention four reasons why reconnaissance should be carried out (4marks) © 2015 Khwisero sub-county form four 2015 3 Geography 312/1 TURN OVER 10. (a) The diagram below shows a type of mass wasting Saturated material moving Frozen soil (a)(i) Name the type of mass wasting shown above (1mark) (ii) Describe how the above mass wasting takes place (5marks) (b) State four factors that influence mass wasting (4marks) (c )(i) Explain any three positive effects of mass wasting on human activities (6marks) (ii) Mention four types of landslides (4marks) (d) Students carried out a field study of an area affected by mass wasting (i) Identify TWO appropriate methods they would use to record data. (2marks) (ii) State three problems they encountered during their study © 2015 Khwisero sub-county form four 2015 4 (3marks) Geography 312/1 TURN OVER