Students explore the massive movements that are constantly shaping Earth: volcanoes erupting, trenches creeping open, continental plates colliding and sending mountain ranges skyward. Students learn how rocks provide clues to Earth's history, structure, and geological activity. They build Earth cross-sections to compare ocean and continental crusts. Students investigate Earth processes that lend support to the theories of continental drift and plate tectonics. They model ocean-floor spreading, plate subduction, magma convection currents, volcanism, and earthquakes at plate boundaries. As a result, students learn to think of the Earth as a geological mosaic, constantly being refitted.
In the Delta Science Reader Earth Movements, students read about Earth's layers and landforms and the forces that shape Earth's surface. They learn how moving plates, earthquakes, volcanoes, weathering, and erosion change Earth. They also read about seismologists, scientists who study earthquakes, and about Charles Richter, the creator of the Richter scale for ranking the strength of earthquakes. Finally, students learn about the rock cycle.
Click here to view the Teacher Preparation Video for this Delta Science Module.