why does sugar make the animals float to the top?
25 January 2019 No Wind Today and Tour Of The Polar Star
This photo should explain how our weather was today. It is amazing how the Antarctic weather can change from one day to another.
Location: McMurdo Science Station
Today was another lab day. We look for animals in the soil samples we collected in the Dry Valleys. We did the samples that were brought up from the bottom of Lake Bonney. It is fun to see both ends of this science, the collecting in the field, all the way through to the observing in the lab. Collecting out in the field is super cool, but it is also pretty awesome to see the animals under the microscope. There are a lot of animals out in those harsh valleys if you know where to look.
Today, I was on centrifuge. That is a machine that spins our samples really fast. All animals and sediments are pushed to the bottom of our tubes.
After spinning the animals to the bottom of the tube, we pour off the water on the top of the sample. We then add sugar water to the samples and stir. The animals will then float in the sugar solution making it easier to find.
After our lab work was done, we went down to visit the Polar Star, the Coast Guard icebreaker that just arrived yesterday. We got a great 2-hour tour of the ship. It was so interesting. I'm sure you'll enjoy this 10-minute video of our tour.
Byron, Matt, and myself will fly to another Dry Valley tomorrow. We will be sampling in Garwood Valley. I am excited to see another remote location here in Antarctica. Check tomorrow's report for how our day goes.