Converging Boundaries
Converging Boundaries
Converging Boundaries : - When things converge, it means that they come together. For example, cars entering a busy freeway need to converge, and join to form one flow of traffic. Converging boundaries occur when two plates are colliding head-on into each other. Rock is destroyed at converging boundaries, and so these boundaries are also known as destructive boundaries. These collisions form an assortment of land features such as mountains chains of islands and underwater trenchers. The features that are formed depend on what types of crust collide.
Mountains, Volcanoes and Trenches : - It oceanic crust is colliding with continental crust, then the denser oceanic plate sinks under the lighter continental plate. This is subduction, and can be seem in Figure, 10.2.6. The continental plate becomes distorted, forming fold mountains and volcanoes. Fold mountains form when plates collide and the crust crumples upwards. Where the oceanic plate subducts ocean floor called a trench is formed. A good example is where the Nazca Plate collides with South America. The Andes Mountains have been formed along the west coast of South America, and the 8000-metre deep Peru-Chic French has formed.
The plate that subducts dives down deep into the mantle, which is extremely hot. The friction of the plates colliding also generates heat. This heat is enough to melt the crust and form magma. So crust is being destroyed as it subducts.
High Mountain Systems : - When two continental plates collide, both are pushed upwards because both have similar densities. This upwards push forms ranges of very high mountains. The best-known example of this is where the Indian Plate is colliding with the Eurasian Plate (Figure 10.2.7). This has formed the Himalayas, the highest mountain range on Earth. Its highest mountain is Mt. Everest at 8,848 metres above sea level.
Island Arcs : - When two oceanic plates collide, the faster-moving plate always subducts under the other . This forms a deep trench. The descending plate melts and is destroyed, forming magma. The magma rises to the surface creating a chain of volcanic islands called an island arc.
The Mariana Trench is the deepest ocean trench yet discovered. It occurs where the Pacific Plate collides with a small plate called the Mariana Plate (part of the Philippine Plate). The trench is 10,911 metres deep- A string of volcanic islands forms an island are along the boundary.
Island arcs are formed when ______________________. | |||
| Right Option : B | |||
| View Explanation |
Which of the following structures are formed due to the Converging boundaries movement ? | |||
| Right Option : D | |||
| View Explanation | |||
Underwater trenches formation occur due to which type of movements ? | |||
| Right Option : B | |||
| View Explanation | |||
Students / Parents Reviews [10]
A marvelous experience with Abhyas. I am glad to share that my ward has achieved more than enough at the Ambala ABHYAS centre. Years have passed on and more and more he has gained. May the centre flourish and develop day by day by the grace of God.
Archit Segal
7thAbhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.
Om Umang
10thIt has a great methodology. Students here can get analysis to their test quickly.We can learn easily through PPTs and the testing methods are good. We know that where we have to practice
Barkha Arora
10thAbhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.
Manish Kumar
10thMy experience with Abhyas academy is very good. I did not think that my every subject coming here will be so strong. The main thing is that the online tests had made me learn here more things.
Hiya Gupta
8thBeing a parent, I saw my daughter improvement in her studies by seeing a good result in all day to day compititive exam TMO, NSO, IEO etc and as well as studies. I have got a fruitful result from my daughter.
Prisha Gupta
8thIt was a good experience with Abhyas Academy. I even faced problems in starting but slowly and steadily overcomed. Especially reasoning classes helped me a lot.
Cheshta
10thOne of the best institutes to develope a child interest in studies.Provides SST and English knowledge also unlike other institutes. Teachers are co operative and friendly online tests andPPT develope practical knowledge also.
Aman Kumar Shrivastava
10thAbout Abhyas metholodology the teachers are very nice and hardworking toward students.The Centre Head Mrs Anu Sethi is also a brilliant teacher.Abhyas has taught me how to overcome problems and has always taken my doubts and suppoeted me.
Shreya Shrivastava
8thIt was good as the experience because as we had come here we had been improved in a such envirnment created here.Extra is taught which is beneficial for future.
