Sea Ice

Sea Ice


Use the information from the Climate Time Machine to help you answer these questions.

What did you notice when looking at the time line?



Look at the three main colors in the graphic: red, white, and blue. Label each color to identify it.



If we analyze this graphic in terms of three colors—red outline, white ice, and blue water—what does it tell you about earth's temperature when there is the most white?



What do you know about heat that makes you say that?



In what year is there the least white?



What year was the sea ice largest? Hint: Look for the year with the biggest white blob!



What does it mean when the white gets smaller and the blue gets bigger? What is happening? Another way to express that change is that, over time, more and more blue appears within the red boundary from 1979-2010. What is creating more blue?



Let's look at that year 2007. How does that compare to 2010 and 2000?



How do we make sense of that? If the white blob got bigger after 2007, does that mean climate change ended?



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