Plates of lithosphere plate, an ocean move because of trench, a chain of convection currents volcanoes develops in the mantle. and many earthquakes occur. One type of motion At a convergent is produced • boundary where byseafloor both plates are spreading. continental, mountain ranges grow and Plates interact at • earthquakes are three types of plate common. boundaries: divergent, convergent and transform. At a transform • boundary, there is a transform fault and Most of the • Earth’s massive earthquakes geologic activity occur but there are takes place at plate no volcanoes. boundaries. At a divergent Processes acting • • boundary, volcanic over long periods of activity produces a time create Earth’s mid ocean ridge and geographic features. small earthquakes. At a convergent • boundary with at least one oceanic
Plates of lithosphere move because of convection currents in the mantle. One type of motion is produced byseafloor spreading. • Plates interact at three types of plate boundaries: divergent, convergent and transform. • Most of the Earth’s geologic activity takes place at plate boundaries. • At a divergent boundary, volcanic activity produces a mid ocean ridge and small earthquakes. • At a convergent boundary with at least one oceanic plate, an ocean trench, a chain of volcanoes develops and many earthquakes occur. • At a convergent boundary where both plates are continental, mountain ranges grow and earthquakes are common. • At a transform boundary, there is a transform fault and massive earthquakes occur but there are no volcanoes. • Processes acting over long periods of time create Earth’s geographic features.
plate_tectonic_pictures.docx