The nature of geologic activity observed near a plate boundary is directly related to the type of plate interaction occurring at that boundary. At divergent boundaries, where plates move apart, magma rises to fill the gap, creating new crust. At convergent boundaries, where plates collide, one plate is forced beneath the other, creating subduction zones and volcanic activity. Transform boundaries, where plates slide past each other, result in earthquakes due to the friction between the plates. Overall, the type of plate interaction directly influences the geologic activity observed at plate boundaries.