Geography Questions and Answers - Form 2 Term 2 Opener Exams 2022

QUESTIONS
Answer all questions in the spaces provided

1.        
   1. Give FOUR methods of underground mining (4mks)
   2. State THREE factors that are considered before the exploitation of minerals in Kenya (3mks)
2.        
   1. Name FOUR areas studied in practical geography (4mks)
   2. Identify the branch of geography in which each of the following is studied
      1. Mining (1mk)
      2. Weather and climate (1mk)
      3. Agriculture (1mk)
      4. Soils and vegetation (1mk)
3.        
   1. Define the following terms 
      1. Vulcanicity (2mks)
      2. An earthquake (2mks)
   2.          
      1. Apart from composite volcano, name FIVE other extrusive volcanic features (5mks)
      2. State FIVE characteristics of a composite volcano (5mks)
4.        
   1. State THREE effects of the movement of tectonic plates (3mks)
   2. State THREE main boundaries associated with plate movement and in each case give an example (6mks)
5.        
   1.      
      1. What is faulting ? (2mks)
      2. Differentiate between normal fault and reverse fault (2mks)
      3. Apart from normal faults and reverse faults ,name other types of faults (3mks)
   2.      
      1. Apart from the rift valley, name FOUR other relief features that are formed as a result of faulting (4mks)
      2. With the aid of well labeled  diagrams describe how a rift valley is formed by compressional forces (8mks)
      3. Give  FOUR examples of rift valleys in the world (4mks)
      4. Explain THREE effects of the earthquakes on physical and human environment. (6mks)

MARKING SCHEME

1.        
   1.      
      1. Drift/adit method
      2. Shaft method
      3. Solution method
      4. Drilling method
   2.        
      1. The value of the mineral
      2. Quality of the ore
      3. The side of the mineral deposits
      4. Method of mining
      5. Technology
2.        
   1.        
      • Map work
      • Statistics
      • Field study
      • Photograph work
      • Capital
      • Market
      • Transport cost
   2.        
      1. Human and economic geography
      2. Physical geography
      3. Human and economic geography
      4. Physical geography
3.      
   1.          
      1. Various ways by which solid, liduid and gaseous materials are forced into the earth's crust and into the surface
      2. Shaking andtrembling of the rocks of the surface of the earth, casued by shock waves that originate  below the surface of the earth
   2.        
      1.        
         1. Basic lava dome
         2. Acid lava cones
         3. Complex cones(stratified)
         4. Ash and cinder cones
         5. Plug dome
         6. Volcanic plug
         7. Volcanic depressions
         8. Hot springs steam jets and geysers
      2.        
         • Cone shaped
         • Has conelets (parasitic cones)
         • It has slopes
         • Made of acid lava
         • Stratified (made if akternating layers of lava and pyroclasts)
4.      
   1.    
      1. Causes earthquakes and vulcanicity
      2. Causes formation of landforms e.g ocean trenches
      3. Eruption of magma can result in formation of valuable minerals
   2.      
      1. Extension boundaries
      2. Compressional boundaries
      3. Transform fault
5.        
   1.        
      1. Cracking of the brittle crystal rocks due to tectonic forces
      2. Normal fault are formed by tensional forces in which one block slides downwards in relation to the other
         Reverse fault are formed by compressional forces in which one block of land is pushed upwards towards the other
      3.           
         1. Thrust fault
         2. Shear/tear fault
         3. Anticlinical fault
   2.          
      1.        
         1. Fault scarp/ escarpment
         2. Block/ horst mountain
         3. Tilt block
         4. Fault steps
      2.         
      3.            
         1. Great rift valleys (Eastern Africa)
         2. The Benice rift valley(West Africa)
         3. The Rhine rift valley
         4. The Baiikal rift valley 
      4.      
         1. Results in permanent displacement
         2. It triggers landslides
         3. Can either lower or raise the sea level