Zoom in on sea ice


Time for some adventure!  We're going to take an exciting journey through the sea ice.  We'll start by flying 20,000 m up in the air.  As you zoom in closer and closer, we'll come crashing down to the surface of the ice.  We won't stop there, though; you'll even get to go inside the ice.  Usually, only scientists with high-tech equipment get to see the ice this closely.  To continue your adventure, read the caption and then choose your destination.



This picture is 0.1 m (or 10 cm) across. It is a special piece of ice called a thin section. We start  with a piece of ice and make it thinner and thinner and thinner until it is only 1 mm thick! Then we take a picture of it using a camera with a special filter called a polarizer. The polarizing filter makes different ice crystals in the thin section have different colors. We're so close to the ice now that it doesn't even look like normal ice!  I wonder what happens if we zoom in even further? 


            


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