Page 328 - SUBSEC October 2017_Neat

UNIT 2
MODULE 3: INDUSTRY AND THE ENVIRONMENT (cont’d)

SPECIFIC OBJECTIVES EXPLANATORY NOTES SUGGESTED PRACTICAL
ACTIVITIES

8. Water

Students should be able to:

8.1. describe the importance of
the water cycle;

8.2. discuss methods of water Include desalination.
purification;

8.3. discuss the importance of
dissolved oxygen to aquatic
life;

8.4. discuss the sources of Definition of the terms
water pollution; persistent and bio-
accumulation in relation to
all forms of pollution. Refer
to Specific Objectives 9.2 and
10.3.
Sources of water pollution
may include nitrates,
phosphates, heavy metals
(lead and mercury),
cyanides, trace metals,
pesticides, herbicides,
petroleum residue,
suspended particles.

8.5. perform experiments to Tests may be carried out
́
test for some pollutants for presence of NO 3
−
specified in Specific PO , Pb , CN .
3
2+
-
Objective 8.4; and, 4
Turbidity test.

8.6. assess the impact of the
pollutants in Specific
Objective 8.4 and Specific
Objective 9.2 on the aquatic
environment.

CXC A11/U2/17 59