Peels back the Earth--first soil and water, and then the crust--to explore plate tectonics.
Reviews Earth's tectonic plates and their movements.
Summarize the main idea of a reading, create visual aids, and come up with new questions using a Four Square Concept Matrix.
Developing plate tectonics theory took several decades and the work of many scientists. Continental drift was formulated by Alfred Wegener and seafloor spreading was developed by many scientists, including Harry Hess.