The impact of the two colliding plates buckles the edge of one or both plates up into a rugged mountain range, and sometimes bends the other down into a deep seafloor trench. When two plates come together, it is known as a convergent boundary. What is convergent boundary class 9 in Short answer? The Cascade Volcanoes, which stretch all from British Columbia through Northern California, are stratovolcanoes that have formed inland from a convergent plate boundary, where ocean crust is subducting below the continent. Helens is a volcano in Washington, near the Oregon border, in the Cascade Range. Is Mt St Helens on a convergent plate boundary? Transform boundaries – where plates slide passed each other.Divergent boundaries – where two plates are moving apart.

Subduction zones occur when one or both of the tectonic plates are composed of oceanic crust. Convergent boundaries: where two plates are colliding.What are the 5 different types of plate boundaries? What are the 3 types of divergent boundaries?įalse, because the correct statement is: There are three types of divergent plate boundaries, namely continental-continental, oceanic-continental, and oceanic-oceanic. As the plates move past each other, they sometimes get caught and pressure builds up. Most seismic activity occurs at three types of plate boundaries- divergent, convergent, and transform. What landforms are created by convergent boundaries?ĭeep ocean trenches, volcanoes, island arcs, submarine mountain ranges, and fault lines are examples of features that can form along plate tectonic boundaries. The edge of the continental plate folds into a huge mountain range. Seen along the west edge of the Americas. A deep ocean trench forms at the coast, and an arc of mountainous volcanoes forms inland. What are 3 facts about convergent boundaries? The west side of California is moving north, and the east side is moving south. The most famous example of a transform boundary is the San Andreas Fault in California. What is an example of a transform boundary? This occurs due to the rise in convection currents. What is divergent boundary class 9?Ĭomplete answer: Divergent boundary is a linear feature in the theory of plate tectonics that takes place between two tectonic plates when they pull away from each other. Convergent boundaries can also form islands. The collision of this oceanic and continental plate was how the Andes Mountains were formed. The West Coast of South America is a convergent boundary between the Nazca Plate and the South American Plate. What are examples of a convergent boundary? The types are ocean-ocean, ocean-continent, and continent-continent. What are the 3 types of convergent boundaries?Ĭonvergent boundaries, where two plates are moving toward each other, are of three types, depending on the type of crust present on either side of the boundary - oceanic or continental. The impact of the colliding plates can cause the edges of one or both plates to buckle up into a mountain ranges or one of the plates may bend down into a deep seafloor trench.

If they are of unequal density, one plate usually sinks beneath the other in a subduction zone. If the two plates are of equal density, they usually push up against each other, forming a mountain chain. A tectonic boundary where two plates are moving toward each other. What Drives Plate Motion, and How Fast Do Plates M.30 What is convergent and divergent boundaries Class 9? What are convergent boundaries simple definition?.How Can You Tell One Mineral From Another?.The boundary between what was once two separate continents is called a suture slivers of ocean crust may be trapped along a suture. The crust beneath a collisional mountain range can be up to 60 to 70 km thick, about twice the thickness of normal continental crust. During this process, not only did the surface of the Earth rise, but the crust became thicker. So when India collided with Asia, the attached oceanic plate broke off and sank down into the deep mantle while India pushed hard into and partly under Asia, squeezing the rocks and sediment that once lay between the two continents into the 8-km-high welt that we now know as the Himalayan Mountains.

Continental crust, unlike oceanic crust, is too buoyant to subduct. But subduction consumed the ocean between India and Asia, and India moved northward, ﬁnally slamming into the southern margin of Asia about 40 to 50 million years ago. India was once a small, separate continent that lay far to the south of Asia.

Convergent boundary definition