Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.
Chong Boon Secondary
Geography Department
Sec 1 Geography
Unit 4 Lesson 4
Water Supply:
Causes of water shortage
Thinking questions
•What causes water
shortage? What
are the big uses of
water?
Lesson Objectives
• In this lesson, you will
–Identify the reasons for global
water shortage.
Factors that cause water shortage
• There are two main categories of
factors
–Demand Factors
• Factors that lead to man se...
Population Growth
Demand Factors
• Population Growth
– As global population increases, the total amount
of water demanded increases.
– Globa...
Affluence
Demand Factors
• Affluence
–Having wealth and being able to live
comfortably.
–Developed countries tend to be affluent.
–A...
Seasonal Rain
Supply Factor
• Seasonal rainfall
–Countries with variation in rainfall will
face water supply issues.
–Seasonal rains (mo...
Climate Change
Global Climate Change
• Global climate change will result in
change in seasonal rain.
• Intensity and timing of seasonal
r...
Water Pollution
Supply Factors
• Water Pollution
–Pollution is the introduction of substances
into the natural environment (air, water,
la...
The Ganges River
• Largest river in India
• Used by over 400 million people
• Used for drinking, bathing and
irrigation, s...
The Ganges River
Summary
Are you now able to
• Identify the factors that affect
demand and supply for water?
Let’s do a
summary
exercise
Upcoming SlideShare
Loading in …5
×

Sec 1 geog unit 4 lesson 4

1,897 views

Published on

water use

Published in: Education
  • Be the first to comment

  • Be the first to like this

Sec 1 geog unit 4 lesson 4

  1. 1. Chong Boon Secondary Geography Department Sec 1 Geography Unit 4 Lesson 4 Water Supply: Causes of water shortage
  2. 2. Thinking questions •What causes water shortage? What are the big uses of water?
  3. 3. Lesson Objectives • In this lesson, you will –Identify the reasons for global water shortage.
  4. 4. Factors that cause water shortage • There are two main categories of factors –Demand Factors • Factors that lead to man seeking more water. –Supply Factors • Factors that affect the availability of water to meet the demands by man.
  5. 5. Population Growth
  6. 6. Demand Factors • Population Growth – As global population increases, the total amount of water demanded increases. – Global Population has increased from 1.6 billion in 1900 to 3.1 billion in 1960 and to 7 billion in 2014. – Most of the population increase is in Less Developed Countries (LDCs) – These are where there is also the largest water shortage.
  7. 7. Affluence
  8. 8. Demand Factors • Affluence –Having wealth and being able to live comfortably. –Developed countries tend to be affluent. –Affluent countries consume more water due to the lifestyle of the people there. –With more money, people consume goods that are produced using more water and live a lifestyle that consumes more water.
  9. 9. Seasonal Rain
  10. 10. Supply Factor • Seasonal rainfall –Countries with variation in rainfall will face water supply issues. –Seasonal rains (monsoons) bring large rainfall in small pockets of the year. –Seasonal rains also lead to dry seasons where there is minimal rain. –Singapore does not have such problems.
  11. 11. Climate Change
  12. 12. Global Climate Change • Global climate change will result in change in seasonal rain. • Intensity and timing of seasonal rains are affected by global climate change. • With Global warming, some areas have less water while others suffer floods.
  13. 13. Water Pollution
  14. 14. Supply Factors • Water Pollution –Pollution is the introduction of substances into the natural environment (air, water, land). –With pollution, water quality will drop. If it becomes unusable for humans, total water source will be reduced.
  15. 15. The Ganges River • Largest river in India • Used by over 400 million people • Used for drinking, bathing and irrigation, spiritual significance. • Industrial waste dumpsite.
  16. 16. The Ganges River
  17. 17. Summary Are you now able to • Identify the factors that affect demand and supply for water?
  18. 18. Let’s do a summary exercise

×