Unit 1 Dynamic Planet Revision. Topic 4: Waterworld. What you need to know. The hydrological cycle Why some areas have unreliable water supply How too little or too much water affects people How humans affect water quality and quantity How climate change affects the water cycle
Topic 4: Waterworld
Practice Question (2 mins, 4 lines to write): The diagram shows the hydrological cycle. State how 2 processes will be affected if there is a long, hot and dry summer. (2 marks)
(similarities and differences)
What biomes would you
expect to find in these
In a table with “economic”, “social” and “environmental” headings, put the following statements in the correct column.
Ex: Which of these affects water quality rather than quantity?
PHYSICAL WATER SCARCITY =
Demand > availability eg SW USA
ECONOMIC WATER SCARCITY = supply available but people can’t afford to exploit them. Lack of money to build storage facilities or distribute water eg Sahel
Write the title
of the Sahel.
1. Watch the clip writing at least 2 advantages and 2 disadvantages.
2. Are your (dis)advantages social, economic or environmental?
a) Use the diagram to state two humans cause water scarcity through pollution. (2 marks)
b) Explain ways people can overcome water scarcity. (4 marks)