On divergent boundaries, the plates are moving away from each other.
On the ocean floor, mid ocean ridges are created by convergent boundaries. On land, valleys are created by convergent boundaries.
Stress on plate: tension
Mid Atlantic Ridge in Atlantic Ocean
Rift in Southeastern Africa
Mauna Loa is one of the volcanoes that formed the island of Hawaii. This volcano is the largest in mass and volume. Mauna Loa has historically been considered the largest volcano on Earth. Mauna first erupted in 1843. The last eruption was in 1984 and did not injure anyone.
On transform boundaries, the plates move past each other in opposite directions.
Transform boundaries make volcanic arcs, faults, and earthquakes.
Stress on plate: shear
Alpine Fault in New Zealand
North Anatolian Fault in New Zealand
San Andreas Fault in California
The San Andreas Fault runs down the western side of California. The fault forms the boundary of the Pacific plate and the North American plate.
On convergent boundaries, the plates push together.
Convergent boundaries make mountain ranges, ocean trenches, and volcanoes.
Stress on plate: compression
Mount Everest in Touche, Nepal
Juan de Fuca Plate pushing into the North American plate on Washington-Oregon Coastline
Ring of Fire
The Ring of Fire is a line of plate boundaries where a lot of mountains and volcanoes have formed from convergent boundaries.