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Friday 30th March 2007 Issue 69

Hoorah for Wired Up! Heading in to April already and – talking of April showers – there’s a brand new Planet Science Quiz to get your teeth into. Plus read about the two girls whose science made a New Zealand drinks company sit up and take notice.

  1. Planet Picks – the February Quiz
  2. The Wire – Ribena and Toadzilla
  3. Gear for Grabs – Family ticket for Thinktank
  4. Try This! – Science experiments for you to try at home...
  5. Winners – Grumpy Goats
1. Planet Picks – News from the world of Planet Science…

It’s April when, traditionally, it rains a bit. This is enough of an excuse for making our quiz about water. If you get all the answers right then you go into the hat for a one of three water battery powered clocks – water powered? Yes you heard right  and if you’re wondering about the technology behind it

So, don’t be a drip…

Ready, Steady, Flow!

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2. The Wire  – Science news straight to your Inbox…

In New Zealand two girls were testing the amount of vitamin C in soft drinks as part of their school science project. They found that the Ribena sold over there did not contain as much vitamin C as the manufacturers claimed.  In fact they could find no trace of the vitamin at all!  The girls told makers GlaxoSmithKline, who ignored their results at first. But now a court's said the firm misled people.  Adverts claimed "the blackcurrants in Ribena have four times the vitamin C of oranges".   Now the firm has been fined £80,000!

Please note that Ribena sold in New Zealand isn't the same as the drink that's sold over here, and the UK makers aren't in any trouble.

A massive cane toad the size of a small dog has been captured in Australia. He’s been nicknamed Toadzilla and he’s about  20cm long - more than twice the size of the average cane toad! It is the biggest cane toad ever found in the Northern Territory.

Cane toad facts:

  • They originally come from South America.
  • Cane toads (Latin name Bufo marinus) can weigh up to 2kg
  • They are toxic and spread quickly
  • They can live for 15 years in the wild
  • Females lay 4,000 to 36,000 eggs at least twice a year

The toads were first released in Queensland in the 1930s to help stamp out cane beetles. But since then their numbers have multiplied and they've marched in their millions across the country - some experts think there could be as many as 200 million of them!

This story came from BBC Newsround

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3. Gear for Grabs – You’ve got to be in it to win it...

Where can you explore deepest space, find out how doctors perform life-saving surgery and travel back in time to Birmingham’s amazing industrial past, all under one roof?  Thinktank, that’s where!  

Thinktank has just opened Recycle! Visitors can learn how to identify, test and sort their rubbish, find out what happens to rubbish when it is recycled and marvel at the unexpected objects that may be made from everyday domestic waste. 

We’ve got a family ticket to give away! Do you want to win it?  If so, send us your name, age and address to: wired-up.news@nesta.org.uk with ‘THINK AGAIN’ as the subject. The winners will be picked at random at 5pm on Wednesday 11th April 2007.

Good luck!

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4. Try This! – Science experiments for you to try at home...

Egg Engraving

  • This is like engraving in reverse i.e. your name will stand out in relief from the shell rather than be etched into it.

  • You will need:

    • Hard boiled egg
    • Wax crayon
    • White vinegar
    • Large glass or bowl (big enough to hold the egg)
  • What to do:

    1. Ask an adult to hard boil an egg for you.
    2. Print your initials or your first name, large and fairly thick, on the shell of a hard boiled egg with the wax crayon.
    3. Now put the egg in a glass large enough to hold it and add enough fresh white vinegar to cover it.
    4. Tiny bubbles should form on the egg which show that the acid in the vinegar is reacting with the shell.
    5. The shell under the waxy letters is protected from this acid action.
    6. In an hour or two, when the bubbling stops, replace the now neutralized vinegar with a fresh supply.
    7. After another two hours wash off the egg under running water.
    8. Rub your fingers over the letters and they should stand out in relief.
    9. You can even try to GENTLY remove the wax coating with a soft brush and scouring powder under running water.
  • What’s going on?

    An average eggshell is 2.35mm thick. It's made of 3.5% protein, 1.5% water, and 95% calcium carbonate mineral. It is this mineral that reacts with the acetic acid in vinegar. The wax protects the shell from coming into contact with the vinegar.  If half of the shell has dissolved during the four hours, then it has only about a 1.25mm thickness left. So be careful!

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  • 5. Winners – Has your name been picked out of the bag?

    Remember issue no. 68?  We were giving away three Grumpy Goats from Flying Pig.  The winners are Jago Harris Edyvean (11) of London, Jan Daly of Hertfordshire and Eloise Pontefract of Wiltshire.  Well done everyone!

    So keep entering – you never know! Next time - it could be YOU…

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    THAT’S ALL FOR NOW

    Got Wired-Up? Got clued up!

    Send any questions, comments, jokes or experiment ideas to: wired-up.news@nesta.org.uk

    P.S. If you wish to unsubscribe from Wired-Up then please email katie.walsh@nesta.org.uk with UNSUBSCRIBE in the subject line.

    Bye for now!