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APN612S - AIR POLLUTION AND NOISE - 2ND OPP - JANUARY 2024 |
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nAm I BIA UnlVERSITY
OF SCIEnCEAnDTECHnOLOGY
FacultyofHealth,Natural
ResourceasndApplied
Sciences
Schoool f HealthSciences
Departmentof Preventative
HealthSciences
13Jackson Kaujeua Street
Private Bag 13388
Windhoek
NAMIBIA
T: +26461207 2970
F: •264 61207 9970
E: dphs@nust.na
W: www.nust.na
QUALIFICATION: BACHELOR OF ENVIRONMENTAL HEALTH SCIENCES
QUALIFICATION CODE: 08BEHS
LEVEL: 6
COURSE: AIR POLLUTION AND NOISE
COURSE CODE: APN 612S
DATE: JANUARY 2024
SESSION: 2
DURATION: 3 HOURS
MARKS: 100
SUPPLEMENTARY/SECOND 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. None
ATTACHEMENTS
1. None
This paper consists of 3 pages including this front page
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SECTIONA:
.
[20 MARKS]
QUESTION 1:
[20 MARKS]
1.1 Provide any four (4) characteristics expected to be possessed by all air
sampling devices.
(4)
1.2 Differentiate between passive and non-passive sampling systems and state
their advantages and disadvantages.
(6)
1.3 Describe the following terms:
i. Photochemical smog
(4)
ii. Air pollution
(3)
iii. Organoleptic method
(3)
SECTIONB:
[24 MARKS]
QUESTION 2:
[24 MARKS]
2.1 Patrons of an entertainment outlet were found to be exposed to sound
Pressure Level of 30 µPa, given the lowest hearing threshold to be 20 µPa.
Deduce the Sound Pressure level (SPL)in decibel.
(4)
2.2 Clarify the primary methods that can be used to improve indoor air quality.
(6)
2.3 Summarise the impacts of acid rain on the environment.
(5)
2.4 Describe any six (6) sources of air pollutants at homes.
(9)
SECTIONC:
[56 MARKS)
QUESTION 3:
[20 MARKS]
3.1 Differentiate between Statutory and Regulatory Laws and give an example in
each case.
(4)
3.2 Establish the primary methods that can be used to improve the quality of
indoor air.
(6)
3.3 Explain the following terms:
i. Sleep disturbance
(3)
ii. Inlet manifold
(3)
iii. Bubbler system
(4)
QUESTION 4:
[36 MARKS]
4.1 Differentiate between Statutory and Regulatory Laws and give an example of
Namibian law in each case.
(6)
AIR POLLUTION AND NOISE (APN 612S)
2"d Opportunity Jan 2024
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4.2 Explain how businesses contribute to the problem of air pollution through
various activities
(8)
4.3 Discuss any five (5) impacts of global warming on human and environmental
Health.
{10)
4.4 Differentiate between the following terms giving example in each case:
i. Sound and Noise
(3)
ii. Weather and Climate
(3)
iii. Primary and secondary pollutants
(3)
iv. Wet deposition and dry deposition
(3)
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END OF QUESTION PAPER
AIR POLLUTION AND NOISE (APN 612S)
2nd Opportunity Jan 2024
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