Ask students to move the graham crackers apart and observe that an opening occurs
and that the frosting is clearly evident. Explain that this movement is called divergent. It
causes openings in the Earth’s crust out of which lava may flow or in which trenches
may form. Have students fill in the related blocks on the worksheet, listing the Mid‐
Atlantic Ridge in the Atlantic Ocean as an example, and trenches, earthquakes, and
mountain ranges under “Effects.”