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There are a few theories that control what happens along these edges, or plate boundaries as they are called.ġ6 Map showing the global distribution of tectonic plates and plate boundaries. It is the direction of movement as well as the difference in crust which determine the variations in processes and landforms at the different plate boundaries. (animation from USGS)ġ4 Find HOTSPOTS: Hawaii, Canary Islands, Yellowstone, Iceland, Galapagosġ5 At the edges of the plates we see the ridges and trenches that gave the first clues to Plate Tectonics. The arrows indicate the direction of movement at each plate. The diagram below shows the major plates and their boundaries. Note that the Indo-Australian Plate may be breaking apart into the Indian and Australian plates, which are shown separately on this map.ĥ World map showing plate boundaries (blue lines), the distribution of recent earthquakes (yellow dots) and active volcanoes (red triangles). Courtesy of NASA.ġ2 The diagram below shows the major plates and their boundaries

It is at these locations where tectonic activity results in earthquakes, volcanoes and the formation of mountain ranges due to the movement of the plates.Ĥ This map shows 15 of the largest plates. 1 Plate Boundaries ~ Plate Movement ~ Plate names ~ Types of landforms/Effect of plate boundaries ~ Names of landforms Maps & InformationĢ Plate Boundaries: The point at which two tectonic plates meet is called a plate boundary.