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8/6/2019 Water Power Point Presentation for WA Years 5 and 6
http://slidepdf.com/reader/full/water-power-point-presentation-for-wa-years-5-and-6 1/23
8/6/2019 Water Power Point Presentation for WA Years 5 and 6
http://slidepdf.com/reader/full/water-power-point-presentation-for-wa-years-5-and-6 2/23
•
Everybody seems to betalking about water. Andit’s no wonder why. Justhave a quick look atwhat’s happening withour water here in
Western Australia.
• Australian households(and that includes us inWestern Australia) usethe most water per household in the world!
8/6/2019 Water Power Point Presentation for WA Years 5 and 6
http://slidepdf.com/reader/full/water-power-point-presentation-for-wa-years-5-and-6 3/23
WA
The averageperson in Perth
might use up to
341,000 litres
(that’s around
eight backyard
swimming pools)
worth of water
each year!
Rest of world The world average is 57,000 litres!
We’re nearly using six-times asmuch water as most of the other
people on the planet!
8/6/2019 Water Power Point Presentation for WA Years 5 and 6
http://slidepdf.com/reader/full/water-power-point-presentation-for-wa-years-5-and-6 4/23
• How can it be that weuse so much water?
• Well we do use a fair bit
of water around thehouse, washing the
dishes, watering the
garden, cleaning our clothes and flushing the
toilet.
8/6/2019 Water Power Point Presentation for WA Years 5 and 6
http://slidepdf.com/reader/full/water-power-point-presentation-for-wa-years-5-and-6 5/23
• But we are getting much, much better at saving water
at home. So how come we're still using so much
more water than the rest of the world?
• It turns out that a lot of the water that we use we don’t
even know we are using. We can’t even see this
water that we use. What are we talking about?
8/6/2019 Water Power Point Presentation for WA Years 5 and 6
http://slidepdf.com/reader/full/water-power-point-presentation-for-wa-years-5-and-6 6/23
• Almost everything we useand eat needs water to beproduced. It’s not writtenon the label and we can’tsee this water in theclothes that we wear or inthe food that we eat. We
don’t even get the chanceto drink it!
• But it was needed to makethe clothes and the food,and so it still countstowards the total amount
of water that we use. Wecall this water ‘VirtualWater’.
8/6/2019 Water Power Point Presentation for WA Years 5 and 6
http://slidepdf.com/reader/full/water-power-point-presentation-for-wa-years-5-and-6 7/23
•
What is 'virtual water'? Well we think it means thewater that is hidden in our food or other products thatwe use. It means the water that was needed to growor make our food or those products that we use.
• For example, it’s the water that was used to grow the
wheat that was used to make the flour for the breadthat you ate for breakfast today. And the butter thatyou spread on your bread? Well, to make the butter the cows that gave the milk needed to be given water for drinking, and needed food to eat, and this foodneeded water to grow.
8/6/2019 Water Power Point Presentation for WA Years 5 and 6
http://slidepdf.com/reader/full/water-power-point-presentation-for-wa-years-5-and-6 8/23
8/6/2019 Water Power Point Presentation for WA Years 5 and 6
http://slidepdf.com/reader/full/water-power-point-presentation-for-wa-years-5-and-6 9/23
• So you’re probablythinking that it can’t bethat much water thatgoes into making all thestuff that we eat andconsume.
• Well, actually, it is quitea lot. Look at thefollowing list of productsand look at how much
water each one uses.
8/6/2019 Water Power Point Presentation for WA Years 5 and 6
http://slidepdf.com/reader/full/water-power-point-presentation-for-wa-years-5-and-6 10/23
• 1 glass of milk (200ml) - 75 litres
•
1 slice of bread (30g) - 40 litres• 1 slice of bread (30g) with cheese (10g) - 90 litres
• 1 apple (100g) - 70 litres
• 1 glass of orange juice (200ml) - 170 litres
• 1 bag of potato chips (200g) - 185 litres
• 1 egg (40g) - 135 litres• 1 hamburger (150g) - 2,400
• 1 pair of leather shoes - 8,000 litres
• 1 cotton t-shirt - 2,000 litres
• 1 sheet A4 paper - 10 litres
• 1 microchip - 32 litres
• 1kilogram of beef - 16,000 litres
8/6/2019 Water Power Point Presentation for WA Years 5 and 6
http://slidepdf.com/reader/full/water-power-point-presentation-for-wa-years-5-and-6 11/23
• So that’s where a lot of our water goes. But that’s notall. Our water supplies lately have been getting lower
and lower. The picture on the next slide shows
Western Australia’s rainfall over the last three years.
• You will see that many parts of Western Australiahave recorded some very low rainfalls while other
parts have recorded high rainfalls. The red shows the
places with the least rainfall while the blue shows theplaces with the most.
8/6/2019 Water Power Point Presentation for WA Years 5 and 6
http://slidepdf.com/reader/full/water-power-point-presentation-for-wa-years-5-and-6 12/23
Rainfall in
Western
Australia for the last three
years
8/6/2019 Water Power Point Presentation for WA Years 5 and 6
http://slidepdf.com/reader/full/water-power-point-presentation-for-wa-years-5-and-6 13/23
• Why have these water levels been dropping? Well asyou probably already know, we’ve been having a very
bad drought for quite some time now: about 10 years
actually.
8/6/2019 Water Power Point Presentation for WA Years 5 and 6
http://slidepdf.com/reader/full/water-power-point-presentation-for-wa-years-5-and-6 14/23
• The problem is that it lookslike this might not just be adrought, but might actuallybe the first signs of climatechange. More and morescientists now believe thatWestern Australia’s climate
patterns are changing.
• This means that the dryspell that we’re havingmight never really end:
instead, this might be thenew climate.
8/6/2019 Water Power Point Presentation for WA Years 5 and 6
http://slidepdf.com/reader/full/water-power-point-presentation-for-wa-years-5-and-6 15/23
• According to CSIRO this will affect:
– The ability of irrigators to produce food;
– The natural environment and its plants and animals in our cities and our rural regions;
– The performance and practices of businesses and
industries; and – The natural or environmental flows in our rivers and
wetlands.
8/6/2019 Water Power Point Presentation for WA Years 5 and 6
http://slidepdf.com/reader/full/water-power-point-presentation-for-wa-years-5-and-6 16/23
• On top of that, the water that we do have isgetting more polluted.
• You’ve probably seenrubbish floating in theriver or creek. This is
pretty bad for our waterways. But there arealso tiny bits of pollutionthat are sometimesimpossible to see but
that are really, really badfor our water.
8/6/2019 Water Power Point Presentation for WA Years 5 and 6
http://slidepdf.com/reader/full/water-power-point-presentation-for-wa-years-5-and-6 17/23
• Where might these tiny bits of pollution come from?
8/6/2019 Water Power Point Presentation for WA Years 5 and 6
http://slidepdf.com/reader/full/water-power-point-presentation-for-wa-years-5-and-6 18/23
• The tiny bits of pollutioncan be found in the and
grease that run-off the
streets in the rain, they
can come from leaking
sewage pipes, fromaccidental spills by
factories, and from cow
and dog poo washing
into the rivers and
creeks.
8/6/2019 Water Power Point Presentation for WA Years 5 and 6
http://slidepdf.com/reader/full/water-power-point-presentation-for-wa-years-5-and-6 19/23
• This can start to sound a lot like very bad news. But
don’t worry; it’s not all bad.
•
There are lots and lots of people all around the worldworking hard to make sure that we’ll have enough
water to drink and grow food with, and the water thatwe have is clean and healthy.
8/6/2019 Water Power Point Presentation for WA Years 5 and 6
http://slidepdf.com/reader/full/water-power-point-presentation-for-wa-years-5-and-6 20/23
• One idea some people havehad for making more water
has been to recycle sewageand turn it into water thatcan be used around thehouse and used inbusinesses.
• You may have heard thatthis was a recent hot issueover in Queensland.
• The town of Toowoombarecently rejected a proposalto drink recycled sewage:
even if it was clean, wouldyou drink recycled sewage?
8/6/2019 Water Power Point Presentation for WA Years 5 and 6
http://slidepdf.com/reader/full/water-power-point-presentation-for-wa-years-5-and-6 21/23
• So maybe you’re not quiteready to drink recycled
sewage. But there are manyother things you can do tohelp save water and protectour waterways.
• Start by thinking about whatyou would most like to seehappen or change: whatwould that be? How do youthink you go about makingthat happen? What little
things could you do to helpyou reach that goal?
8/6/2019 Water Power Point Presentation for WA Years 5 and 6
http://slidepdf.com/reader/full/water-power-point-presentation-for-wa-years-5-and-6 22/23
• Write down a few
sentences for each coolgreen action thatdescribes what you hopeto do. If you’re a bit stuckfor ideas, have a look atthe next slide for some of the tips that we’re doingto to save water.
• Using the Cool Green Hero Checklist that we have
provided, or using one that you have created
yourself, think up at least two actions around water
that will help our environment and that you think
you can achieve within the next six months.
8/6/2019 Water Power Point Presentation for WA Years 5 and 6
http://slidepdf.com/reader/full/water-power-point-presentation-for-wa-years-5-and-6 23/23
Tips for saving water
• Fix any dripping taps or leaky toilets. A leaking tap can waste asmuch as "
• 20,000 litres of water a year. Enough said. "
• Likewise the dual-flush toilet. If itʼs yellow let it mellow, if itʼs brownflush it down - with a half flush. "
• While weʼre being short but sweet, take shorter showers. "
•
And obviously, turn off the tap while youʼre brushing your teeth. Weknow you know, but youʼd be amazed... "
• Install a rainwater tank! Your roof is more efficient than a dry damcatchment and youʼll save on water bills. "
• Save some shower water and share it with the lawn. Or the streettrees in front of your house. "
• For more tips and more information on water visit the Our Cool
School site.• Did we forget any? Send us your tips and we’ll post them on the
Our Cool School website!