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What is a pH SCALE?

The pH scale is a measure of how acidic or basic a chemical substance istoddlers junions.

A pH of 7 is netural and this is ideal for all creatures.

  • A pH less than 7 is acidic
  • A pH greater than 7 is basic or alkaline
Strength strong acids weak acids neutral weak bases strong bases
pH 0-2 3-6 7 8-10 11-14
Examples Car acid batteries Lemon juice Water Toothpaste Oven cleaner

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The Etiwanda Wetlands by Nathan

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Questions Nathan

  • What would happen if you leave the fish on the bank?

    Carp dumped at Lock Island. Not a pleasant smell!

  • What would happen if the carp were put back in the water?
  • Are carp stopping the breeding of native fish?
  • How long does it take for a carp to die on the bank?
  • What is  the best river to fish in that doesn’t have much carp in it rubber boats for sale?
  • What are effective ways to recycle carp?
  • Why are carp bad for the river?

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Our Trip To The Mildura Native Nursery

Mildura Native Nursery has many different parts to it. It has native plants and trees to plant in all sorts of gardens. They also plant native seeds. sumo suits for sale

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Global Warming

The Problem

I think global warming would be not quite as bad if we didn’t leave our lights on all day, leave a TV on, use electrical objects when not needed and do other things because when we use power(unless it’s solar which is a bit different)we are burning coal which is creating greenhouse gasses. Also some fly sprays and other aerosols can create greenhouse gasses sumo suits for sale.

The Solution
• Turn off electrical appliances at the power point when not in use (or just at night and at school)
• Do not leave lights on when not in the room (big problem!)
• Try not to use fly sprays and other aerosols (use a fly swat instead)
• Use electrical appliances less often (instead use something else) or reduce the time you use them for.

Have you been successful and reduced your power bill? How have you achieved this?

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RUBBISH FREE LUNCH AWARD CEREMONY 2008

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On Thursday, October 16, James, Maddie, Sarah, Courtney, Ms Murray and I went to Melbourne to collect the Hero Award for the Rubbish Free Lunch Challenge for our school. At 6:10 in the morning we flew down to Melbourne. I liked looking out the window on the plane. We arrived at the Melbourne Airport, had some breakfast and caught a taxi to the Melbourne Zoo, where the Ceremony was being held. When the Zoo opened we went in and started looking at all the animals. After a short time we went to Carousel Park to wait for the Ceremony to start. A lot of schools were called up to accept their awards and their cheques, including us. We won a giant, cool award and a $2000 cheque because our school has been involved in the Rubbish Challenge for more than 10 years and every year we try some different ideas to try to be rubbish free. Our whole school, from Prep to 6 try to have rubbish free lunches and snacks.commercial jumping castles for sale

After the Ceremony we ate lunch and went to see some more animals. We met Peter Crisp our local Member of Parliament who attended the Ceremony and also the Minister for Education, Bronwyn Pike. I liked the Reptile Room at the Zoo the best. Later we all bought some souvenirs. After another taxi ride back to the Airport, we had tea and boarded the plane home. I was exhausted but I had a really great time. Thank you to Ms Murray for taking us and our sponsors for making it possible for us to travel.

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Our visit to Wallpolla Island!

On Tuesday 22nd July the Enviro Team and people in the River Heath Conference Team went to Wallpolla Island. We went by bus over rocky, bumpy roads which took 45 minutes! When we first got there we saw Chowilla floodplain. It was completely dry with lots of dead trees.

We travelled along further and we saw Dedman’s Creek. It had a cool machine called a regulator that helps control water for the wetlands. It kept the Creek from flooding and going dry.The regulator was separating Dedman’s Creek from Horseshoe Lagoon. The water is let flow into Horseshoe Lagoon during autumn and winter and then let dry out during spring and summer. If Horseshoe Lagoon was wet all the time, it would be a perfect place for carp to breed and having the regulator stops this.????

There were also carp screens. A carp screen stops adult carp from getting through in to Horseshoe Lagoon. Baby carp can still get through but Murray Cod eat baby carp so they do not survive.jumping castle sales

We moved along to the Murray River and had lunch. We played around in the trees after we finished. Finally we got on the bus and returned to school. 🙂

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Murray Cod and Electrofishing

The Murray Cod.

The Murray Cod is the largest Murray fish. It is a well known fish native to the Murray. It is very big, about 40-50 cm in length but they have been recorded up yo 1.8 m and 113.5 kg! Wow! They eat almost anything they find- probably one of the reasons they are so big. They also eat carp which makes the Murray Cod pretty useful!

Electrofishing

To do electrofishing they have to take a boat out into the river. Then they turn on a special machine that shoots out electrical waves that stun the fish and put them to sleep. Then they float to the top of the water so they can be picked up and tagged, or if it’s a carp or another introduced fish then they kill it. Electrofishing only catches about 75% of the fish around the boat because some can hide behind rocks, logs and reeds and some bigger fish are harder to catch too. Also the bigger the fish the less time it’ll be asleep forobstacles courses.