Global Water Resources
Name one source of saltwater
Oceans and Seas
What process changes water in vapour?
Evaporation
After Australia's rainfall has evaporated, drained to groundwater water or been transpired by plants, what percentage is left over? 6%, 12% or 20%?
6%
What does Water Scarcity mean?
Not having enough clean water for people.
In Cape Town's Day Zero, how many litres were each person allowed?
50L
What percentage of Earth's water is freshwater?
3%
What is condensation?
When water vapour cools and forms liquid.
What is the biggest river system in Australia?
The Murray-Darling
How much of Earth's freshwater is frozen?
2/3
What % of the Earth is covered in saltwater? 65%, 71% or 73%
71%
True or False:
Most freshwater is found in rivers and lakes?
False. Most if found in icebergs and glaciers.
What is precipitation?
Water falling from the sky (rain, sleet, snow and hail).
What is the name of the mountain range that runs up the east coast of Australia?
The Great Dividing Range.
Name a country that has had a major water shortage.
South Africa, India and Jordan.
Turn off taps, shorter showers, fix leaks, reuse water, wash car on grass etc.
What continent is the Amazon River in?
South America
Why is the water cycle called a 'closed system'?
Because no water leaves or enters, it just keeps going around and around.
List 2 factors that limit the amount of rain Central Australia gets.
Location, Latitude, Rain Shadow
What is desalination?
Taking salt out of seawater to make it drinkable.
Irrigation uses how much of the Earth's fresh water supply? 50%, 60% or 70%
70%
What country has the largest dam?
China
Why does the equator get more rainfall?
The sun rays are stronger, allowing more evaporation.
What uses the most water in Australia: Agriculture, Industrial sites or domestic use?
Agriculture
Give an example of one natural and one human cause of water scarcity.
Ask teacher
What is one benefit and one problem with building a dam?