Geography Questions and Answers - Form 2 Mid Term 2 2022

QUESTIONS

1.                          
   1. Name the instruments used to measure the following elements of weather.
      1. Air pressure (1 mk)
      2. Duration of sunshine (1 mk)
   2. Briefly explain how relative humidity is calculated. (2 mks)
2.                    
   1. Give two examples of extrusive igneous rocks. (2 mks)
   2. Name the type of changes undergone by rocks in metamorphism. (2 mks)
3.                        
   1. Identify the factors which influence folding. (2 mks)
   2. Apart from fold mountains, name two features resulting from folding. (2 mks)
4.                          
   1. Mention two modern methods of showing direction. (2 mks)
   2. What is magnetic variation? (1 mk)
   3. Other than the Equator, name three other important latitudes. (3 mks)
5. The diagram below is an illustration of the grid reference system.  Use it to answer the questions that follow.
   
   
   1. What is the name given to the lines numbered 45 – 51? (1 mk)
   2. Give the four figure grid reference of points Q and R. (2 mks)
   3. Give six figure grid reference of points P and R. (2 mks)
6. Study the table below and use it to answer the questions that follow.
   VALUE OF EXPORTS FROM (KSH MILLION)
   

   CROP	1997	1998	1999	2000	2001
   Tea	24000	33000	33000	35000	34000
   Coffee	17000	13000	12000	12000	7000
   Horticulture	14000	15000	18000	21000	20000
   Tobacco	2000	2000	2000	2000	3000
   Total	57000	63000	65000	70000	64000

    Using a vertical scale of 1cm to represent 5 billion, draw a comparative line graph to present the above data.  Use the graph paper provided. (7 mks)
   

MARKING SCHEME

1.                          
   1. Name the instruments used to measure the following elements of weather.
      1. Air pressure (1 mk) - barometer
      2. Duration of sunshine (1 mk)
   2. Briefly explain how relative humidity is calculated. (2 mks) - Campbell-Stokes sunshine recorder
2.                    
   1. Give two examples of extrusive igneous rocks. (2 mks)
      pumice, obsidian, andesite, rhyolite, and basalt.
   2. Name the type of changes undergone by rocks in metamorphism. (2 mks)
      When rocks are buried deeply they are subjected to a great deal of pressure and heat. When that happens the minerals reorganize themselves to become different kinds of rocks. This is how we some of the gemstones like diamonds and garnets. If deep enough the rocks melt and start from scratch by recrystallizing. If they cool slow the crystals can grow very big. The type of crystals will depend on what the original rock was
      Common metamorphic rocks include phyllite, schist, gneiss, quartzite and marble.
3.                        
   1. Identify the factors which influence folding. (2 mks)
      The nature of the rocks whether elastic or resistant to force.
      The amount of force exerted on the rocks./ Strength or intensity of the compressional force.
      Temperature within rocks/high
   2. Apart from fold mountains, name two features resulting from folding. (2 mks)
      Cuestas.
      Escarpments.
      Intermountain basins/ plateaus.
4.                          
   1. Mention two modern methods of showing direction. (2 mks)
      the use of the compass direction
      Use of magnetic compass which has a bearing
      maps
   2. What is magnetic variation? (1 mk)
      In navigation, at a given place and time, the horizontal angle between the true north and magnetic north measured east or west according to whether magnetic north lies east or west of true north.
   3. Other than the Equator, name three other important latitudes. (3 mks)
      Tropic of Cancer (Latitude 23.5oN)
      Tropic of Capricorn (Latitude 23.5oS)
      Arctic Circle (Latitude 66.5oN).
      Antarctic Circle (Latitude 66.5oS).
5. The diagram below is an illustration of the grid reference system.  Use it to answer the questions that follow.
   
   
   1. What is the name given to the lines numbered 45 – 51? (1 mk)
      eastings
   2. Give the four figure grid reference of points Q and R. (2 mks)
      REM: Easting:Northing
      Q 4823
      R 50258
   3. Give six figure grid reference of points P and R. (2 mks)
      P 475244
      R 500258
6. Study the table below and use it to answer the questions that follow.
   VALUE OF EXPORTS FROM (KSH MILLION)
   

   CROP	1997	1998	1999	2000	2001
   Tea	24000	33000	33000	35000	34000
   Coffee	17000	13000	12000	12000	7000
   Horticulture	14000	15000	18000	21000	20000
   Tobacco	2000	2000	2000	2000	3000
   Total	57000	63000	65000	70000	64000

    Using a vertical scale of 1cm to represent 5 billion, draw a comparative line graph to present the above data.  Use the graph paper provided. (7 mks)