Page 152 - CAPE Green Engineering Syllabus 2016.docx_Neat

-5- 02265020/CAPE/KMS 2015 SPEC

GREEN ENGINEERING
UNIT 2 - PAPER 02
KEY AND MARK SCHEME

Question 2. (continued)

S.O Suggested Response Mark Marks
Allocation KC AK PA

2:1:5 Type of Potential Negative
Energy
Geothermal consequences on Environment
Tidal/wave
Biofuels Landscape change, underground
water resource, accelerated
Nuclear cooling of earth core

Landscape change, reduced
water motion/circulation and
deterioration of local water
quality

May not be CO , neutral, may
release global warming gases
like methane during the
production of biofuels,
landscape change,
deterioration of soil
productivity

Radiation leakage and
contamination; the disposal
and safe storage of nuclear
waste for hundreds of years
up to a hundred thousand
years in geological
repositories

2:1:3 (c) 44

2 marks for each labelled axis 0
2 marks for labelled graphs – quasi-brittle
failure showing breaking point

TOTAL 20 MARKS 16 4