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APN612S - AIR POLLUTION AND NOISE - 1ST OPP - NOVEMBER 2023 |
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nAml BIA UnlVERSITY
OF SCIEnCEAnDTECHnOLOGY
FacultyofHealthN, atural
ResourceasndApplied
Sciences
Schoolof HealthSciences
Departmentof Preventative
HealthSciences
13JacksonKaujeuaStreet T: +264612072970
PrivateBag13388
F: •264 612079970
Windhoek
E: dphs@nust.na
NAMIBIA
W: www.nust.na
QUALIFICATION: BACHELOR OF ENVIRONMENTAL HEALTH SCIENCES
QUALIFICATION CODE: 08BEHS
COURSE: AIR POLLUTION AND NOISE
LEVEL: 6
COURSE CODE: APN 612S
DATE: NOVEMBER 2023
SESSION: 2
DURATION: 3 HOURS
MARKS: 100
FIRST OPPORTUNITY: QUESTION PAPER
EXAMINER:
MODERATOR:
Prof Omotayo Awofolu
Dr Larai Aku-Akai
INSTRUCTIONS
1. Answer all questions in the answer booklet provided.
2. Please write neatly and legibly.
3. Do not use the left side margin of the exam paper. This must be allowed for the
examiner.
4. No books, notes and other additional aids are allowed.
5. Mark all answers clearly with their respective question numbers.
PERMISSIBLE MATERIALS
1. Non-Programmable Calculator
ATTACHEMENTS
1. None
This paper consists of 3 pages including this front page
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[25 MARKS]
QUESTION 1:
[25 MARKS]
1.1 The size of Particulate Matters (PMs) are linked to their potential to cause adverse
health effects. State the characteristics of particles that are referred to as
"fine particles".
(4)
1.2 Enumerate the characteristics used to describe odour during measurement by
sensory technique.
(4)
1.3 EHSstudents that are receiving lecture on Air Pollution are exposed to noise of
about 95dB from a nearby construction company during this period. List any five
(5) possible effects of the noise on the students.
(5)
1.4 In a step-wise manner, state the process you will take in investigating noise
pollution complaint by a resident.
(6)
1.5 Using illustration, briefly explain how you will measure a pollutant gas using the
Bubbler System.
(6)
SECTIONB:
QUESTION 2:
2.1 Briefly explain your understanding of Photochemical Smog and state
any two (2) of its impacts on human health.
[35 MARKS]
[35 MARKS]
(4)
2.2 Explain the term "organoleptic method" and state its advantage over the chemical
Method,
(4)
2.3 Customers of a local entertainment outlet were found to be exposed to sound
pressure level (SPL)of 50 µPa. Given the hearing threshold value as 20 µPa.
Determine the Sound Pressure level (in dB).
(5)
2.4 Briefly discuss how air pollution can influence climate change.
(6)
2.5 Outline the desirable characteristics expected of all air sampling devices.
(8)
2.6 Your neighbourhood is close to a major highway and hence, exposed to noise
emanating from vehicles. Express any four (4) control options you will present
to the municipal manager in order to mitigate against the noise.
(8)
AIR POLLUTION AND NOISE (APN 612S)
ptQpportunity November 2023
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SECTIONC:
[40 MARKS)
QUESTION 3:
[40 MARKS]
3.1 Explain the concept of the natural greenhouse effect with the aid of an
illustration.
(8)
3.2 Communities can also contribute to the issue of air pollution. Summarise any
four (4) of these contributions.
(8)
3.3 State any four (4) situations in which the municipal by-laws allow for the
broadcast of noise and give an example in each case.
(8)
3.4 Provide examples of air polluting activities that are targeted by
legislation.
(6)
3.5 Differentiate between Regulatory Law and Statutory Law and give examples of
implementation of each.
(10)
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END OF QUESTION PAPER
AIR POLLUTION AND NOISE (APN 612S)
1st Opportunity November 2023
3