Posts Tagged ‘seawater’

Investigating the properties of seawater 2017

January 29, 2017

Once again, first year marine scientists carried out individual investigations into the properties of seawater.

Many students did lab-based investigations:

And a few went out into the field… Yeji measured the variation in salinity with location in Pedder Bay by kayaking (she got a bit wet and had her pants dried by Hazuki, who investigated the effect of wind speed on water movement). And Quni was prepared for the wet weather but as you can see below, returned to the lab in the sunshine!

PC connections with ONC

January 11, 2017

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Pearson College (PC) students have had the opportunity to connect with Ocean Networks Canada (ONC) in a few ways lately. During block week (12-15 December 2016), second year Marine Science students travelled to the headquarters of ONC at the University of Victoria. Thanks to Natasha, Jessica and Mercedes for all that you taught us. In the photo above, PC students are using aluminum foil to create boats in a competition to hold the most ‘fish’ (actually marbles, metal washers and foam bits) in water of different densities.

Yesterday, 10 January 2017, Dwight Owens from ONC (and father of PC 41 Tessa Owens!) came to PC to present ‘Hot, Sour and Breathless: Oceans under stress’ to first year marine scientists. It was a wonderful review and preview – thank you Dwight!

And one final connection with ONC that I must mention, Dave Riddell spent almost two hours with me on 23 November 2016 guiding me through Oceans 2.0 which allowed me to assign a data analysis task to first year students. Thank you Dave!!

We are very lucky to be so close to such an incredible organization staffed by wonderful educators and scientists and doing leading edge marine science.

Investigating the properties of seawater

December 12, 2014

P1040030Today all three classes of first year marine scientists investigated various properties of seawater. Each student had a research question and hypothesis, designed a method to test their hypothesis then carried out their investigation in class.  In the photo above, Young is investigating the effect of salinity on conductivity and in the photo below Romanos is setting up his experiment to measure the effect of salinity on sea ice melting time.

P1040031P1040039Above, Alana is measuring the effect of bubbling carbon dioxide into the water on the dissolved oxygen in seawater and below, Malou is setting up her experiment which involved increasing salinity with ‘Instant Ocean’.

P1040034P1040041Noemi modified the salinity of seawater samples to mimic the salinities of different seas and measure the effect on boiling point.

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P1040049Adva, in the photo above, tested the effect of bubbling oxygen gas into seawater on the pH and Sofiya, in the photo below, tested the effect of humidity on dissolved oxygen.

P1040048 P1040047Connor, in the photo above, added drops of solutions with different salinities to the surface of a coin to see if there was an effect of salinity on cohesion / surface tension.

P1040036David Hawley came down to the floating lab and checked out a few of the experiments as part of his last tour of classes as the director of Pearson College. He is on his way to the IBO in the Netherlands very soon.  We will certainly miss his visits to Marine Science classes, but David, please know that you are absolutely welcome to come back any time!

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