Water Cycle 1
Water falling to the earth is condensation,
True or False
False
What is 'the engine' of the water cycle?
The sun
How much water does a human need per year?
a) 1,000 m³
b) 10 m³
c) 1000000 m³
a) 1,000 m³
Australia is the second driest continent. True or false?
True, only Antarctica is drier.
Where is the 'mouth' of a river?
Where the river enters the sea or ocean
What is the term for when water is heated and turns from a liquid to a gas?
Evaporation
What are the three states of water?
Solid, liquid, gas
When water is really scarce, it is called a _________.
drought.
What are the mountains on the east coast of Australia called?
The Great Dividing Range
What is an esturay?
Where the salt and fresh water mix.
As water vapour rises it cools and __________.
Condenses.
When water droplets become too heavy and can't stay in the air, they fall as__________?
Precipitation
Name a continent that has a lot of water for its population.
North America or
South America
Most of Australia's rainfall occurs on the East and North coast.
True or False
True
The lower part of the river.
Some precipitation does not soak into the ground but ends up in rivers and lakes. What is this process called?
Runoff
Explain 'transpiration'.
This is when water evaporates from plants, mainly through their leaves.
Describe physical water scarcity.
In arid regions due to low and unreliable rainfall.
Or overconsumption of water resources
The West Coast is dry because of warm ocean currents.
True or false
False! The ocean currents are cold. Cold water doesn't evaporate as well, so there is less water in the atmosphere to fall as rain.
What is the name for a river or stream flowing into a larger river or lake?
Tributary
The term for when water fills the porous spaces in the soil.
Infiltration
This word describes the process of groundwater moving through the soil below the Earth's surface.
Percolation
Describe economic water scarcity.
When communities don’t have the means to develop an adequate, reliable supply of water.
Helped by having water tanks.
What is the name of the weather system that often forms over the middle of Australia that doesn't produce rain?
High-pressure system.
Explain how a billabong (or oxbow lake) is formed
A meander (bend in the river) becomes detached from the river as the river makes a new, more direct path. It usually happens during a flood event.