Here are the answers to the questions: 1. Divergent boundary - Mid-ocean ridge. New ocean floor is created as the plates move apart and magma rises to fill the gap. 2. Convergent boundary - Subduction zone. One plate moves under the other and is recycled back into the mantle. Volcanoes and earthquakes occur above the subducting slab. 3. Transform boundary - San Andreas Fault. The plates slide past each other, causing earthquakes along the fault line.