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Envs 314 Y3s1 Question Paper

Envs 314 Y3s1

Course:Bachelor Of Environmental Science

Institution: Kabarak University question papers

Exam Year:2010

COURSE CODE: ENVS 314
COURSE TITLE: GEOGRAPHICAL INFORMATION SYSTEMS
AND REMOTE SENSING
STREAM: Y3S1
DAY: WEDNESDAY
TIME: 9.00 – 12.00 P.M.
DATE: 11/08/2010

INSTRUCTIONS:
• Answer ALL Questions in Section A and Any TWO in Section B. Time: 3 Hours

SECTION A (40 MARKS)
1. (a) Explain how the application of GIS differs from CAC and CAD applications (4 marks)
(b) Describe the difference between analog and digital GIS storage and retrieval functions.
(5 marks)
2. (a) Describe the use of symbols to represent real world objects in GIS. (6 marks)
(b) Explain the characteristics of spatial measurements scales. (6 marks)
3. (a) Explain how the system of angular measurement is used to locate the objects on the earth.
(4 marks)
(b) Describe three computer files used in GIS. (6 marks)
4. (a) Explain the use of network system in management of GIS information. (6 marks)
5. Describe the meaning and use of land information system. (3 marks)

SECTION B (20 MARKS)
6. Describe the vector data structure and explain how it differs from Rasta in its ability to locate
objects in space. (10 marks)
7. Describe the advantages of IMGRID Rasta data model. (10 marks)
8. Describe the general uses of GIS. (10 Marks)

Envs 314 Y3s1 Question Paper

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