QESOSA Tong Kwok Wah Secondary School
 The trouble with water 
Unit 3.2
Name:
2014-2015 S2 Geography
(
)
S .2 (
)
Where does water come from? (Textbook P. 8-12)
Key Questions:
1.
2.
Where is the water?
What is a water cycle?
Preparatory task
Find out the meaning of the BOLD words. Write down the definition in Chinese in the boxes below.
Passage A
Large areas of the earth are covered by water. They form seas and oceans, which amounts to about
96% of all water on the earth. Freshwater, which is the kind of water we need, only amounts to about 4%. It
is stored in different ways on land and the air:
 1.7% is frozen in (1) glaciers and (2) polar ice caps;
 1.7% is (3) ground water in rocks; and
 Less than 1% is water in rivers, (4) lakes, plants and in the air.
(5) Water cycle refers to water moves on the earth (between the (6) atmosphere, the ocean and the
land) continuously. Water on the earth goes round and round through the processes of (7) evaporation,
(8) transpiration, (9) condensation, (10) precipitation and (11) infiltration.
English
Chinese
1. glaciers
2. polar ice caps
3. ground water
4. lakes
5. water cycle
6. atmosphere
7. evaporation
8. transpiration
9. condensation
10. precipitation
11. infiltration
1
QESOSA Tong Kwok Wah Secondary School
 The trouble with water 
2014-2015 S2 Geography
Name:
(
)
S .2 (
)
1. Where is the water? (Textbook, p.8)
The following photos show the distribution of water and freshwater. Identify and describe the
distribution.
A. The distribution of water
 _________________of the earth are covered by
water and they form seas and __________.
 Among all water, there are only ________ is
freshwater which is the kind of water we need.
 The freshwater is stored in different ways on land
and in the _________.
Figure 1a
A photo taken from the space
 1.7% is frozen in __________ (Example 1a) and
_______________ (Example 1b).
 1.7% is _____________ (Example 2)
 Less than 1% is in ___________ (Example 3a),
Figure 1a A photo taken from the sea
________ (Example 3b), ________ (Example 3c)
and ___________(Example 3d).
B. The distribution of freshwater
Example 1a
_______________________
Example 1b
_______________________
Example 2
_______________________
Example 3a
Example 3b
Example 3c
Example 3d
_________________ _________________ _________________ __________________
2
QESOSA Tong Kwok Wah Secondary School
 The trouble with water 
2014-2015 S2 Geography
Name:
(
)
S .2 (
)
2. What is a water cycle? (Textbook, p.9-11)
Task1 : The following figure shows the water cycle.
(A) Define the water cycle.
(B) Identify and describe the processes in the water cycle.
(A) Definition: Water cycle

Water cycle refers to___________________________ (between the atmosphere, the
ocean and the _____________) continuously.
(B) The processes in the water cycle
Process
(1)
(2)
Identification
Description
When the sun heats the ground, the water in the seas,
rivers, lakes, and soil is evaporated and become
water vapour.
The water in the plants put back into the atmosphere.
(3)
When the water vapour rises, it cools and condenses,
clouds are formed.
(4)
More clouds gather, drops of water fall to the ground.
(5)
As drops of water fall to the ground, some are absorbed
by plants. Some seep into the ground and become
ground water.
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QESOSA Tong Kwok Wah Secondary School
 The trouble with water 
2014-2015 S2 Geography
Name:
3. A drainage basin (
(
)
S .2 (
)
)
Key Questions:
1. What is a drainage basin?
2. What are different features in a drainage basin?
3. What is the order of the drainage basin?
Task 1: The following figure shows a drainage basin.
(A) Define the drainage basin.
(B) Identify the different features in a drainage basin.
(A) Definition of drainage basin
 The area of land drained by a river and its tributaries. The area is divided by a
boundary called the watershed.
(B) The different features in a drainage basin
Features
Name of the features
Chinese meaning
A
B
C
D
E
F
4
QESOSA Tong Kwok Wah Secondary School
 The trouble with water 
Name:
2014-2015 S2 Geography
(
)
S .2 (
)
Task 2: The following figure shows a drainage basin on a map.
1. Mark and identify different features in the drainage basin.
A: ____________________________
B: ___________________________
C: ____________________________
D: ___________________________
E: ____________________________
F: ____________________________
2. Mark the stream order and identify the order of the drainage basin.
No. of the stream order
First order stream with ‘1’
Second order stream with ‘2’
Third order stream with ‘3’
It is a _____________________ order basin.
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