Blubber, blubber, between gloves of rubber!

Today, I did the messiest experiment!  Dad got Vaseline all over himself. Our experiment was to show the benefit of a layer of blubber to sea creatures, particularly those who spend a lot of time in cold water like  whales, sea lions, seals and walruses.   We had to put an inch of Vaseline or shortening all over a gloved hand, and it was really messy!  Then we were to put a second glove over top of the Vaseline.  We were using medical gloves, which fit super-tight!  When Dad tried to put the second glove on me, the Vaseline oozed out, so he had to try to … Continue reading Blubber, blubber, between gloves of rubber!

How water temperature affects deep ocean currents…

Our Swimming Creatures of the Sixth Day curriculum kicks off with information about the ocean itself, and one of the neat activities demonstrates how water temperature affects water movement.  Thermohaline currents are deep ocean currents, caused by temperature, or salt content or both.  In this experiment we were only working with water temperature. Our question:  Which is heavier – hot or cold water? Grace decided that hot water was heavier. The procedure is as follows:  First put a few drops of blue food coloring in a clear container of hot water.  Then put a few drops of yellow, in a cup of ice water.  Pierce the cup, … Continue reading How water temperature affects deep ocean currents…

NASA Plankton Bloom

After a WONDERFUL Christmas break, The Daughter and I headed back up to the school room last Monday! We started a few new things – one of which is the second book in the Zoology series which focuses on sea creatures.  The first chapter discusses salinity, tides, the continental shelf and abyssal plain and also phytoplankton and zooplankton.  I was so excited to receive this timely photo from NASA of a plankton bloom – it’s quite lovely!  The NASA description is below the image. Stirring Up a Bloom Off Patagonia Off the coast of Argentina, two strong ocean currents recently stirred up … Continue reading NASA Plankton Bloom