Geography Questions and Answers - Form 3 Mid Term 1 Exams 2023

• ANSWER ALL QUESTIONS IN SECTION A AND B IN THE SPACES PROVIDED
• IN SECTION B ANSWER QUESTION 6 AND ANY OTHER TWO QUESTIONS

QUESTIONS 

SECTION A: (25MARKS)ANSWER ALL QUESTIONS IN THIS SECTION IN THE SPACES PROVIDED

1.  
   1. What is environment in Geography (2mks)
   2. Explain how Geography is related to medicine (2mks)
2.  
   1. State four reasons why it is important to study Geography (4mks)
   2. Define the Geomorphology (2mks)
3.  
   1. Describe the formation of Lava plateau (4mks)
   2. Give one example of a Lava plateau in Kenya (1mk)
4. Study the diagram below and answer the questions that follow 
   
   1. Name the part labelled (2mks)
      1. A-
      2. B-
   2. Give three characteristics of outercore (3mks)
5.  
   1. Define the term rock. (2mks)
   2. Name three types of igneous rocks             (3mks)

SECTION B : ANSWER QUESTION 6 ANY OTHER TWO  IN THIS SECTION (75mks)

6.  
   1. The table below represents rainfall and temperature figures for a town in Africa . use it to answer the questions that follow 
      

      Month	J	F	M	A	M	J	J	A	S	O	N	D
      Temp (0°C)	27	28	28	28	27	25	25	24	25	26	27	26
      Rainfall (mm)	25	38	99	140	277	439	277	69	142	201	71	25

      1. Using a scale , 1cm represent 50mm, draw a bar graph to represent the rainfall data (7mks)
      2. Calculate the annual range of temperature for the town (2mks)
   2. Outline three characteristics of the tropical continental climate (3mks)
   3. With aid of diagram, show how variation in altitude have brought zones of Natural vegetation on Mt. Kenya             (5mks)
   4.  
      1. Student from a school in Murang’a carried out a field study at Mt. Kenya forest. Outline two hypotheses for their study. (2mks)
      2. What are the advantages of studying forests through field work. (4mks)
      3. what problems are they likely to encounter in the field             (2mks)
7.  
   1.  
      1. What is earth movement (2mks)
      2. Give three forces that are responsible for lateral earth movements (3mks)
      3. Give 3 main examples of major tectonic plates (3mks)
   2.  
      1. Name three Dormant volcanoes in East Africa  (3mks)
      2. Give other two types of volcanoes apart from dormant volcano (2mks)
      3. Explain the significance  of vulcanicity            (10mks)
   3. Give any two causes of earthquakes (2mks)
8.  
   1. Give any two uses of soda ash (2mks)
   2. Explain the importance of soda ash /trona to the economy of Kenya           (10mks)
   3. Outline the problems facing Soda Ash /trona mining in Kenya (3mks)
   4.  
      1. Give two uses of diamond (2mks)
      2. Explain how transport influences the exploitation of minerals (2mks)
   5. Explain three benefits of petroleum production  to the economies of OPEC (Oil Producing & Exporting Countries) (6mks)
9.  
   1. Name one fold mountain               (1mk)
      1. Asia –
      2. North America -
   2.  
      1. Apart from fold mountains name 3 other features resulting from folding (3mks)
      2. Explain the significance of fold mountain to human activities (8mks)
   3. Your to carry out field study on faulting in Rift valley
      1. Name 4 features that you would identify which are as result of faulting (4mks)
      2. Apart from using secondary sources, state five other ways you would prepare for field study (5mks)
      3. Explain the significance of fold mountain to human activities (8mks)
   4. Name three types of fault you are likely to identify (3mks)

MARKING SCHEME

SECTION A (25 MARKS)

1.  
   1. What is environment in Geography (2mks)
      • All the external conditions surrounding an organisms and which influences its behavior or activities
   2. Explain how Geography is related to medicine (2mks)
      • Medicine deals with diagnosing; Preventing  and curing of disease; Geography focifsy on the  factors influencing the spread of the diseases ( medical  geography)
2.  
   1. State four reasons why it is important to study Geography (4mks)
      • Help to develop skills
      • It encourages international awareness co-operation 
      • It helps the learners to appreciate important social values such as time management / responsibility 
      • It promote positive attitude towards protection/ conversion of resources
      • It leads to development of career opportunities 
      • It helps learners to manage times.
      • It enables learners to explain the orgin and formation of the earth and land forms. 
   2.  Define the Geomorphology (2mks)
      • study of land forming process
3.  
   1. Describe the formation of Lava plateau (4mks)
      • formed from ultra-basic / extremely fluid/how viscosity lava
      • Lava reaches the earth’s surface through either a single or multiple vents/fissures
      • The lava flow over along distance spreading evenly over  large areas before cooiling
      • The lava cools slowly forming an extensive plateau (lava plateau ) (4x1=4mks)
   2. Give one example of a Lava plateau in Kenya (1mk)
      • Yatta Plateau
      • Laikipia Plateau 
      • Uasin Gishu plateau 
      • North West Kenya plateau
      • Maralal 
      • Athi plateau  (any 1x1= 1)
4. Study the diagram below and answer the questions that follow
   1. Name the part labelled (2mks)
      • A- Ocean / Hydrosphere  (1mk)
      • B- Sima (1mk)
   2. Give three characteristics of outer core (3mks)
      • Composed of very hot  molter nick
      • material of iron and nickel
      • Has a thickness of 2100km
      • Temperatures are estimated to be upto 3700°C
      • Density is estimated to be 10.5gm/cc (any 3 x1=3mks)
5.  
   1. Define the term rock. (2mks)
      • it is the aggregated of one or more mineral forming solid part of the earth crust. (1x2=2mks)
   2. Name three types of igneous rocks             (3mks)
      • Intrusive rocks/ plutonic rocks
      • Extrusive / oceanic rocks 
      • Hyper basal rocks  (3 x1= 3mks)

SECTION B :ANSWER QUESTION 6 ANY OTHER TWO  IN THIS SECTION (75mks)

6.  
   1. The table below represents rainfall and temperature figures for a town in Africa . use it to answer the questions that follow
      

      Month	J	F	M	A	M	J	J	A	S	O	N	D
      Temp (0°C)	27	28	28	28	27	25	25	24	25	26	27	26
      Rainfall (mm)	25	38	99	140	277	439	277	69	142	201	71	25

      1. Using a scale , 1cm represent 50mm, draw a bar graph to represent the rainfall data (7mks)
         
      2. Calculate the annual range of temperature for the town (2mks)
         28 − 24 = 4°C
   2. Outline three characteristics of the tropical continental climate (3mks)
      • High temperature 32°C in the hot season
      • Cool temperature of about 21°C during cold season. 
      • Moderate annual temperature range of about 11°C 
      • Large diurnal temperature range in the dry season
      • Moderate rainfall which increases in areas close to the equator and decrease as one moves away from the equatorial region.
      • Heavy conventional rainfall occurs in the hot season due to low pressure at this time.
      • Cool months are dry due to the offshore winds
      • Prevailing wings are mainly track winds 
      • The annual rainfall is approximately 765mm – 1000mm (any 5 x1=5mks)
   3. With aid of diagram, show how variation in altitude have brought zones of Natural vegetation on Mt. Kenya             (5mks)
   4.  
      1. Student from a school in Murang’a carried out a field study at Mt. Kenya forest. Outline two hypotheses for their study. (2mks)
         • The dominant trees are hardwoods 
         • Mt. Kenya forest is a main habitat for wide variety of wild animals species 
         • Some part of Mt. Kenya forest has been destroyed by man. 
         • Any other relevant hypothesis  (any 2 x 1=2mks)
      2. What are the advantages of studying forests through field work. (4mks)
         • It increases the interest of the student through field observations and various activities
         • It enables the struggle to learn through first hand information 
         • Students are able to apply knowledge learned from the books in the field.
         • Students are able to determine the influence of the forest on the local climate.
         • Students are able to establish the economic importance of forest to the local community
         • it enables the students to develop skills such as measuring, observation, listening and evaluation. (4x1=4mks)
      3. what problems are they likely to encounter in the field             (2mks)
         • Attack by dangerous animals eg snalts
         • Fatigue
         • Accidents/ falling
         • Inaccessibility of some parts of forest due  (any 2 x1=2mks)
7.  
   1.  
      1. What is earth movement (2mks)
         • is the movement of crustal rocks caused by forces originating and operating in the interior of the earth.
      2. Give three forces that are responsible for lateral earth movements (3mks)
         • Tension forces 
         • Compression forces
         • Tear/ shear forces  (3 x1= 3mks)
      3. Give 3 main examples of major tectonic plates (3mks)
         • North America plate 
         • South America plate
         • Pacific ocean plate
         • European
         • Africa
         • Australian     (any 3 x1 = 3mks)
   2.  
      1. Name three Dormant volcanoes on East Africa  (3mks)
         • Mt. Kilimanjaro
         • Mt. Longonot
         • Mt Suswa       (3x1=3mks)
      2. Give other two types of volcanoes (2mks)
         • Active volcanoes
         • Extinct volcanoes 
      3. Explain the significance  of vulcanicity            (10mks)
         • Volcanic mountains create a rain shadow effect on the leeward side 
         • The rugged nature of some volcanic landscape discourage agriculture and settlement
         • Some volcanic materials such as granite, ashes and young lava weather to form infertile soils which do not support Agriculture 
         • Volcanic eruptors can destroy property and bury agricultural land  Volcanic eruption can lead to loss of life through flowing of laval not ash and dust and emission of poisonous gases. 
         • Some gases and clust emitted during volcanic eruptions pollute the environment              (any 5 x 2=10mks)
   3. Give any two causes of earthquakes (2mks)
      • Volcanic explosurs
      • Faulting 
      • Collision of tectonic plates
      • Folding which causes stress on rocks
      • Isostatic adjustment and gravitative  pressure
      • use of explosively 
8.  
   1. Give any two uses of soda ash (2mks)
      • Manufacture of glass
      • Manufacture of soap
      • Manufacture of detergents
      • Manufacture of canstic soda  (any 2 x1 =2mks)
   2. Explain the importance of soda ash /trona to the economy of Kenya           (10mks)
      • It has stimulated the development of infrastructure such as road and railways 
      • Provision of employment opportunities therefore raising the standards of living of people
      • Through the export of Soda ash, Kenya earns  foreign exchange 
      • It has led to development of social amenities such as hospitals, schools and social clubs which has benefited the local community 
      • Promoted industrial  growth since soda ash is used as raw material in other industries such as glass and paper (5 x2 =10mks)
   3. Outline the problems facing Soda ash production   (3mks)
      • low value of salt (Sodium Chloride) is insufficient to meet production costs 
      • Stiff competition from developed countries with large deposits such as Israel and USA
      • High labour costs as the workers have to be give incentives to work in the hostile environment and climate.  (3x3=9mks)
   4.  
      1. Give two uses of diamond (2mks)
         • For making jewellery
         • For polishing metals
         • For making cutting instruments (2x1=2mks)
      2. Explain how transport influences the exploitation of minerals (2mks)
         • Efficient transport links allow mineral products to be moved from the mining site to the parts/market without delay.
         • Minerals that are bulky requires railway/water/cheap transport system to reduce the total cost of production/ mining .
         • Minerals deposits in remote areas/ poorly developed transport system are less likely to be exploited . (any 1 x 2= 2mks)
   5. Explain three benefits of petroleum mining to the economies of OPEC (Oil Producing & Exporting Countries (6mks)
      • countries earn foreign exchange which is used to develop other sector of the economy. 
      • petroleum is used as raw materials leading to the growth of petroleum related industries.
      • The revenue gotten from petroleum enable the countries to investments oversea immensely
      • Petroleum mining has created employment opportunities for local population raising standard of living
      • The proceeds from petroleum mining have been used to develop social amerites / infrastructures (any 3 x 2 = 6mks)
9.  
   1. Name one fold mountain               (1mk)
      1. Asia – Himalayas         
      2. North America -  Rocky
   2.  
      1. Apart from fold mountains name 3 other features resulting from folding (3mks)
         • Rolling plains
         • Intermoutane basins 
         • Intermoutane plateau 
         • Valley and range landscape
         • Anticlinal and Synclinal valleys (3x1=3mks)
      2. Explain the significance of fold mountain to human activities (8mks)
         • Fold mountains are sources of rivers that provide water for generation of HEP, domestic and industrial use. 
         • Fold mountains are offer forested and provide timber which is used in the building and construction industry medical aestletic wildlife habitat 
         • Some fold mountains have exposed valuable mineral deposits which are mined 
         • Fold mountain are tourist attraction 
         • windward slopes of fold mountain receives heavy. 
         •  The leeward slopes of some fold mountains create rain shadow effect which result into aridity discouraging cropping farming encouraging livestock farming 
         • some fold mountain may acts as barrier to transport and communication line (4x2=8mks)
   3. Your to carry out field study on faulting in Rift valley
      1. Name 4 features that you would identify which are as result of faulting (4mks)
         • Escarpment / scarp slopes 
         • Fault steps
         • Block mountains / fault block 
         • Tilt block 
         • Rift valley (4x1=4mks)
      2. Apart from using secondary sources, state five other ways you would prepare for field study (5mks)
         • Setting up study objective for study
         • identifying methods of data collection 
         • Carrying out a reconnausane study/ previst 
         • Seeking permission
         • Drawing route ways
         • Identifying relevant stationery
         • dividing themselves into groups
         • Discussion 
         • Drawing working schedule (5x1=5mks)
   4. Name three types of fault you are likely to identify (3mks)
      • Normal fault 
      • Reverse fault 
      • Tear fault 
      • INrust fault 
      • Anticlinal fault