Page 151 - CAPE Green Engineering Syllabus 2016.docx_Neat

-4- 02265020/CAPE/KMS 2015 SPEC

GREEN ENGINEERING
UNIT 2 - PAPER 02
KEY AND MARK SCHEME

Question 2.

S.O Suggested Response Mark Marks
Allocation KC AK PA

2:1:4 (a) 88

Energy Source Origin
Fossil fuel Organic matter
Hydrogen Hydrogen atoms
Wind Air/wind
Solar Sun
Hydro Water
Geothermal Ground/hot water
Tidal/wave Water,(sea, ocean lakes)
Biofuels Organic matter
Nuclear Atoms

(1 mark each for any FOUR types of energy
sources)
(1 mark each for any FOUR origins)

2:1:5 (b) 88

Type of Potential Negative
Energy consequences on Environment
Fossil fuel
Hydrogen Air pollution, acid rain,
ozone depletion, global
Wind warming potential

Solar Thermal and chemical changes
in atmosphere, influence on
Hydro microorganisms in soils and
water, accelerated corrosion
of man-made structures

Landscape change, soil
erosion, reduced air
circulation and deterioration
of local air quality

Landscape change, soil
erosion, reduced solar
irradiation for plants and
vegetation

Changes in local eco-systems
and local weather conditions,
social and cultural impact,
induction of earthquake