Approximately what percentage of the world is covered in water?
71%
100
What percentage of an adult human's body is made up of water?
60%
200
What can be used to make salt water an available resource?
Desalination plants
200
Water used to create electricity is known as...
Hydroelectricity
200
Is Australia water rich or water poor?
Water poor
200
What percentage of the world's water is salt water?
97.5%
200
How much of an increase has there been in the world's water since the Earth was formed?
None
300
What causes water to fall as rain?
When droplets or ice particles in clouds grow and combine to become so large that the updrafts in the clouds can no longer support them, and they fall to the ground.
300
What activity uses the most water in Australia? How much of our water does it use?
Irrigation for farms - 70%
300
In terms of the world's driest continents (not including Antarctica), where is Australia ranked?
First
300
What percentage of the Earth's fresh water is available for human consumption?
1%
300
The conversion of a vapour or gas to a liquid in the water cycle is called...
Condensation
400
List 3 places where frozen water is stored.
Ice caps, glaciers, icebergs
400
What is potable water?
Water used for drinking, cooking and washing
400
Why do many Australians live on the southern and eastern coast?
Many Australians live on the southern and eastern coast because it is the best-watered part of the continent and the climate is temperate with warm summers and mild winters.
400
What percentage of the Earth's fresh water is frozen in polar ice caps?
70%
400
Approximately how many people live without access to safe water?
650 million
500
A form of irrigation that saves water and fertilizer by allowing water to drip slowly to the roots of many different plants.
Drip irrigation
500
List three reasons why water resources are under threat.
• There is increased demand from a world population that has doubled since 1964.
• There is increased competition from an increased variety of agricultural uses.
• Climate change is changing rainfall patterns.
500
Where are the wettest regions of Australia?
North Queensland
500
Most of the world's usable fresh water is...
Groundwater
500
Which chain of islands contains the world's rainiest location?