As the fourth graders look at how the Earth is constantly changing, students took a look at our the Earth’s plate tectonics are constantly changing. Here the students use a hard boiled egg as a model of the Earth. They cracked the egg shell gently and traced the cracks. By gently squeezing the shell, the cracked areas either bunched together or moved away. This simulated how the Earth’s plate sometimes collide into each other to create mountains, spread apart to create trenches or slip under each other. Each movement demonstrating the different type of plate boundaries: divergent, convergent and transform. Check out a short video of the fourth graders conducting their experiment.
