Geography Questions and Answers - Form 2 Mid-term Exams Term 1 2022

QUESTIONS

Instructions:
Answer all the questions in the spaces provided

1.                    
   1. State three types of plate tectonic boundaries. (3mks)
   2. Give two evidences of continental drift. (2mks)
   3. List four major plates in plate tectonic theory. (4mks)
2. State three significance of folding to human activities. (3mks)
3. What is the difference between folding and faulting? (2mks)
4. With the aid of labeled diagram, explain how a dyke is formed. (5mks)
5.                
   1. Give a definition of earthquakes. (2mks)
   2. Differentiate between sesmic focus and epicentre. (2mks)
6. State the significance of rocks and minerals. (2mks)
7. You are to carry out a field study on weather around your school.
   1. Give three methods of data collection. (3mks)
   2. State two follow up activities for the field study. (2mks)

MARKING SCHEME

1.                
   1. State three types of plate tectonic boundaries. (3mks)
      • Extension boundaries (constructive margins)
      • Compressional boundaries (destruction margins)
      • Transform faults (conservative margin)
   2. Give two evidences of continental drift. (2mks)
      • The jig-saw fit of continental drift.
      • Geological structure distribution of ancient glacial deposit, paleontological evidence, palemagnetic.
   3. List four major plates in plate tectonic theory. (4mks)
      • The eurasion plate
      • The Australia plate
      • The austrictic plate
      • The north America plate, the African plate
      • The south America plate, the pacific plate
2. State three significance of folding to human activities. (3mks)
   • Leads to the formation of mountain which receive heavy rainfall give rise to rivers.
   • The process creates areas of crustal weakness which may trigger off volcanicty.
   • Folding is significance in the formation of some minerals and brings minerals to the surface.
   • Fold mountain forms unique scenery for tourist attraction.
3. What is the difference between folding and faulting? (2mks)
   • Folding is the bending of rocks of earths crust due to the earth movement while faulting is the cracking or fracturing of the rocks of the earth’s crust
4. With the aid of labeled diagram, explain how a dyke is formed. (5mks)
   
   
   • Dyke is a mass of intrusive rock which is cuts across the bedding plane of existing rock.
   • It can be vertical or inclined
   • When the rock around is softer it will be eroded and will stand as a ridge.
   • When dyke is softer than the surrounding rock it will be eroded to form along narrow depression.
5. Give a definition of earthquakes. (2mks)
   1.          
      • Earthquake is the shaking or trembling of the rocks of the surface of the earth caused by shock waves that originating below the surface of the earth.
   2. Give the main difference between contours and form lines. (2mks)
      • Contours are lines drains on a map to show all points with the same height above sea level. Form lines are lines drawn on a map which are not sufficiently mapped, form line are not accurately surveyed.
6. State the significance of rocks and minerals. (2mks)
   • Rocks form spectacular scene which act as tourist attraction.
   • Certain type of rock act as water reservoirs and store a lot of water in the underground.
   • Rocks provide the parent material for the formation of rich soil which are used for agriculture.
7. You are required to carry out a field study on weather around your school.
   1. Give three methods of data collection. (3mks)
      • Questionnaires
      • Interviews
      • Observation
      • Experimentation
      • Content analysis.
   2. State two follow up activities for the field study. (2mks)
      • Writing a report.
      • Analyzing and classifying the data collected.
      • Conducting group discussion
      • Giving a lecture to other students.