My students have been asking me about 2012 since the day the movie came out. Is the world really going to end? What is Earth Crust Displacement and is it real? Is the mantle going to take over the crust? Can the sun really melt the inside of the Earth?
I decided I needed to get the facts. So I went to see the movie myself, dragging my family along with me, to see what all the commotion was about and so that I could better answer their questions.
While of course I don't believe that the world is going to end in 3 years, I do think that a lot of the science in the 2012 movie is accurate and that the excitement about the movie can be used to teach students. It is also a great opportunity to teach them how to be critical, rather than passive, observers of the world around them. By using the movie to weed out the few true facts, students will understand how movies are made and be able to better distinguish between fiction and reality, while also learning something about earth science.
Although I have and will tell my students that a planetary alignment would not cause mass destruction, I will discuss with them the parts of the movie that, by themselves, are possible. For example, I have already mentioned to them that Yellowstone National Park is the largest active volcano in the world. If it erupted, like it does in the movie, it would cause widespread destruction over much of the northwest and would send ash showers that would reach us all the way in New York. The ash could cause climatic changes that might affect the entire globe.
The Theory of Earth Crust Displacement, the premise upon which the entire movie is based, is actually a real theory, developed a decade before the Theory of Plate Tectonics. While most scientists agree that it is faulty and inaccurate at best, its use in the movie does demonstrate how there can be competing theories about the same thing. It is a perfect opportunity to explain to my students how one theory can be replaced by another once new evidence emerges.
The Crust Displacement that occurs in the movie, however, causes effects that can also be explained by plate tectonics. For example, the movement of the crust causes numerous faults and surface cracks to appear, starting in California and other current earthquake centers. This would allow my students to look at where on the globe earthquakes are likely to occur and why. Later in the movie, underwater earthquakes cause giant tsunamis across the planet. This, too, is an effect that we see today, even without Earth Crust Displacement.
Thus, although the movie may be far-fetched and over dramatized, the kids are excited about it, so I find it better to use their excitement for learning that to let it go to waste. Now they can stop pestering me to go see the movie and we can have an open discussion about the science behind it. In addition to the science, one thing the movie does illustrate well is the cultural and political discrimination that might occur if such a disaster did actually occur. That can be discussed in any classroom.
For all teachers out there, especially science teachers, see this movie if you haven't already.