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Ensc 0100: Introduction To Environmental Science Question Paper

Ensc 0100: Introduction To Environmental Science

Course:Diploma In Tourism And Hotel Management

Institution: Chuka University question papers

Exam Year:2013

CHUKA

UNIVERSITY

UNIVERSITY EXAMINATIONS

FIRST YEAR EXAMINATION FOR THE AWARD OF
DIPLOMA IN TOURISM AND HOTEL MANAGEMENT

ENSC 0100: INTRODUCTION TO ENVIRONMENTAL SCIENCE

STREAMS: DTHM Y1S1 TIME: 2 HOURS

DAY/DATE: MONDAY 12/8/2013 8.30 A.M. – 10.30 A.M.
INSTRUCTIONS:

Answer ALL questions in Section A andANY TWO in Section B.

SECTION A (30 MARKS)

1. Define the following terms [2 marks]

(i) Environmental Science
(ii) Pollution

2. (a) Outline briefly FOUR characteristics of hazardous materials. [4 marks]
(b) State TWO sources of air and soil pollution. [2 marks]

3. (a) Describe TWO functions of the ecosystem. [4 marks]
(b) Outline THREE factors that affect primary productivity in plants. [3 marks]
(c) Distinguish among herbivores, carnivores and omnivores and give examples
of each. [3 marks]
(d) Briefly describe energy flow in an ecosystem. [3 marks]

Q4. (a) Briefly explain FOUR measures for protecting soil from degradation.
[4 mark (b) State the goal of waste management. [2 marks]

Q5. Briefly discuss the effect of agricultural revolution to human population size.
[3 marks]
SECTION B (40 MARKS) Answer any TWO questions.

Q6. (a) Using examples, discuss the major types of ecosystems. [10 marks]

(b) Describe the carbon cycle in an ecosystem and the processes involved in the release of carbon dioxide in the atmosphere and show how human activities
have affected the carbon cycle. [10 marks]

Q7. Discuss the major types of water pollutants, outlining their sources and effects.
[20 marks]

Q8. (a) Discuss the impact of rapid human population growth on the environment.
[10 marks]

(b) Discuss the negative effects of agriculture on the environment, outlining
measures which need to be put in place to solve the problems. [10 marks]

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Ensc 0100: Introduction To Environmental Science Question Paper

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