7 Hum Revision - Water in the World

Name four of the stages of the Water Cycle.

Answer explanation

Evaporation:

When water heats and turns into a gas.

Condensation:

When water cools and becomes clouds.

Precipitation:

When the water forms rain and falls from clouds.

Run-off:

Extra water not soaked into the ground. Becomes surface water.

Transpiration:

When water is evaporated from plants which give off vapour.

What percentage of Earth's water is fresh water?

• 3%

• 30%

• 70%

• 1%

How much freshwater is available to humans?

• Less than or equal to 1%

• 3%

• 15%

• 5%

How many people around the world DO NOT have access to clean drinking water?

• 2 Billion

• 8 Billion

• 1 Billion

• 500 million

What are the three states of water? What is a naturally occurring example of each?

Answer explanation

Liquid - Water in the ocean, rivers lakes.

Gas - Water vapour from evaporation, steam from geysers or volcanos.

Solid - Ice from snow, hail, icebergs.

Define 'renewable energy'.

Answer explanation

Renewable energy is energy which is able to naturally be made new again. Meaning we can reuse it in a way which is not harmful to the environment.

Explain what 'water poor' means. Use the choropleth map to help your explanation. Give an example of a 'water poor' location.

Answer explanation

A country that is 'water poor' has restricted access to safe, clean, usable freshwater. An example of a 'water poor' country is Australia, as it has a desert in the centre.

Select all the values water can have.

• Cultural

• Economic

• Aesthetic

• Business

• Religious

Explain Australia's main uses for water. Give reasons as to why this might be.

Answer explanation

Australia's main use of water is agriculture. This might be because Australia does not have much industry and its population is fairly low, meaning it doesn't use a lot of water for 'domestic'.

Explain how First Nations' Australians maintain a 'cultural' connection to water.

Answer explanation

First Nation's Australians use water ways for cultural practices such as hunting and gathering. As well, a lot of art and dreaming stories feature water sources.