This is the divergent boundary (picture shown on top), it's motion is that it moves apart from each other. The stress that this plate motion causes, is tension, meaning it pulls apart. There are two ways landforms are created by the divergent boundary motion, one is continental to continental, which means when continents collided, and the other is oceanic to oceanic. Two landforms that are created by continent to continent are, Volcanoes and Rift Valleys. An example of a real world event, is the East African Rift (Picture shown on bottom). The East African Rift began to develop 22-25 million years ago, soon the African Plate with split into two tectonic plates. A landform created by oceanic to oceanic is the Mid-Ocean Ridge.