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In science class today, second year students had to design a poster showing the effects of global warming.

In first place was a poster showing the Statue of Liberty, the Millenium spire and the Eiffel tower before and after a dramatic sea level rise.

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In second place was a poster showing a polar bear on a very small ice berg surrounding by sea water.

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And in third place, a poster showing the Earth, in the form of an icecream cone, being turned upside down.

 
 
Students in 5th year managed to get very nice results in their experiment to determine the optimum pH for celery catalase activity.
 
 
Have a look at this amazing 4 minute video on how the reintroduction of wolves into Yellowstone National Park in California has had a phenomenal effect on the whole ecosystem - including chnaging the direction of the river!

http://uk.screen.yahoo.com/video/playlist/wildlife-videos/wolves-alter-course-rivers-162607632.html?vp=1
 
 
Charles Darwin was born on this day in 1809. Do you have any evolution questions?
 
 
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Burning magnesium in oxygen in today's second year science class!

 
 
All the notes from previous classes are written under the "Classes" tab above. Visit that page to catch up on classwork or to download notes that you missed from the classes.
 
 
By now, many of you (Junior Cert science students) will have started your coursework B investigations. Just to recap, here they are here again:
Biology
Investigate and compare the effects of pH on the catalytic effect of the enzyme catalase, found in (a) celery and (b) animal liver, on the rate of breakdown of hydrogen peroxide.

Chemistry
Investigate and compare how the solubilities, in water, of (a) potassium chloride and (b) sodium carbonate (anhydrous) change with temperature.

Physics

Investigate and compare how the rates of flow of powdered or granulated solids through a funnel are affected by (a) the size of the solid particles and (b) any one of the funnel dimensions.
Remember some important points before you conduct your experiments:
  • Do some research. The more you know about the background to your investigation the better.
  • Design the experiment. For instance, what pH values are you going to test if you decide to do the Biology investigation?
  • Plan. Write a list of the equipment, materials, chemicals etc that you will need.
  • Think safety. Ensure you always wear a lab coat and lab safety glasses when doing work in the laboratory. Wear gloves when necessary.

When conducting your experiment remember these important points:
  • Collect and make sure you have all the equipment you need.
  • Keep everything organised and close at hand when conducting your experiment.
  • Be fair - make sure volumes and masses are the same.
  • Have a control(s) where appropriate.
  • Have your lab notebook ready at hand to take down notes and results.
  • Try to put your results in table format - it's easier to make sense of.

After you have finished your experiment remember these important points:
  • Ensure you have all the results you need and taken down accurately.
  • Tidy up all the equipment putting everything back so that you will be easily able to locate it when you repeat your experiment.
  • Write up everything about your experiment, in as much detail as possible.
  • Think about ways you could have improved your experiment or any additional things you would like to include in the experiment.
Good luck with your investigations!
 
 
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Bish 5th year Biology students conducted a basic gel electrophoresis experiment today.
They used food colouring in glycerine rather than DNA samples.

 
 
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Second year science students using red cabbage as an indicator to test the acidity/basicity of various solutions today in science class.