hello students welcome back to my estr Tei YouTube channel today we are going to have great than science quarter 1 week 2 lesson plate boundaries at the end of this video Lesson you are expected to describe the different types of plate boundaries differentiate the types of convergent boundaries and identify the places plates that lie on the different types of boundaries so stay tuned and keep on on [Music] watching plate tectonics is a theory that explains the surface of the Earth is broken into large and small Latos cusing intense geologic activity such as earthquakes volcanism and mountain building in our previous video Lesson you are done with the plate tectonics and its relationship to the distribution of earthquake epicenters active volcanoes and major mountain belts if you haven't watched this video Lesson check out the link in the description box below today this video will provide you the information that will help you understand plate boundary boundaries but first let's define what is plate boundaries plate boundaries are the lines at the edges of the different pieces of the leosphere remember class that lithospheric plates are moving due to the convection current in the Earth's interior these plates interact with each other at their boundaries and these interaction Le to various geological phenomena the interaction or movement causes the formation of PL boundaries namely Divergent convergent and transform let's talk about them one by one let's have first divergent boundary it is formed when two tectonic plates move apart from each other creating tension this movement creates new crust as magma rises from the mantle to solidify at the surface the earth's surface is cool enough to solidify the magma that throws thus creating new oceanic rust or sea floor a divergent boundary is also called constructive boundary the mid ocean ridge is formed by the Divergence between oceanic plates while Continental Reef valleys formed between continental plates Reef Valley can also be found at the bottom of the ocean where sea Flor spreading occurs both the formation of the mid ocean ridge and reft Valley had the occurrence of an earthquake example of divergent boundaries is is the midatlantic ridge where the Eurasian plate and the North American Plate are moving apart forming a new oceanic crust next we have convergent boundary it is formed when two plates move toward each other this boundary has three types we have the oceanic plate continental plate boundary we also have two oceanic plates boundary and two continental plates boundary in oceanic continental plates boundary and two oceanic plates boundary the oceanic plate bends downward into the mantle through the process called subduction subduction is formed when the Collision leads the one plate being forced beneath another it can also cause the plates to crumble and fold leading to the formation of mountain rages in two oceanic plates boundary Island volcanic chain is formed parallel to the trench these two types of boundary the oceanic and Continental and the oceanic oceanic plates have volcanic activity because the descending plate melts and causes magma to rise on the other hand the two continental plates converging results to the formation of compression Zone example of this is the Himalayas where the Indian plate is colliding with the uian plate so class that is convergent boundaries now let's talk about the third one transform fault boundary it is formed when two tectonic plates are sliding past each other and it is also called strike slip fault rocks that line the boundaries split into pieces as the plates slip at each other a cck is then formed creating an under sea Canyon or linear fault Valley example of this is the S Andreas Fault in California where the Pacific Plate and the North American Plate slide past each other understanding these boundaries help explain why certain areas are more prone to earthquakes volcanic activity and Mountain formation each type of boundary creates different geological features and processes based on how the plates interact now let's have an activity and see if you really understand our lesson for today so help me complete this table what can you say about the arrows the direction of motion or the movement of plates are a way from each other and this is what we called Divergent that's correct example of this is the midatlantic ridge where the Eurasian plate and North American Plate are moving apart very good class now let's have the second row two plates come together one sliding under the other or both are rising up so the direction of movement is toward each other and it is called convergent boundary that's correct example of this is the Himalayas where the engine plate is colliding with the Iration plate that's correct class now let's have the last one it says here transform fault boundary what can you say about the direction or movement of the arrows they are slide past each other that's correct so the motion is two plates slide past each other example of this is the son Andrea's fault good job class let's have another one help me complete this paragraph with the correct term the picture shows two plates which are that's correct oceanic plate and continental plate that's correct now the oceanic plate subducts and the bending of plate downward into the mantle is the process called subduction that's correct class and this type of convergent boundary is what we called oceanic continental plate boundary now let's proceed to the next picture the picture shows what can you say about the picture it shows Oceanic Oceanic convergent boundary that's correct class it happens when two oceanic plates are moving towards each other the region where one oceanic plate is pushed below is called what is this called it is called subduction zone that's correct this zone is marked by a deep trench in the ocean floor known as the oceanic trench in some cases the tectonic forces associated with subduction can lead to the formation of back Arc basins behind the volcanic island arc that's correct class now let's proceed to the last picture the picture shows two plates which are continental plate and another continental plate instead of one plate sinking beneath the other the Collision results in the compression that's correct compression and crumpling of the Earth's cross this leads to the formation of mountain ranges and Continental cross thickening that's correct class very good for helping me answering our activities now let's sum up all of our discussion today divergent boundary is formed when two tectonic plates move apart from each other creating tension convergent boundary is formed when two plates move toward each other and we have three types of convergent boundary these are oceanic plate continental plate boundary two oceanic plates boundary and two continental plates boundary lastly we have transform fault boundary it is formed when two plates are sliding past each other and that's it for our lesson for today I hope you learn something new in our lesson don't forget to like share and subscribe and click the notification Bell button for more video lessons shout out to all our grade 10 students to all our supporters who always watch our video Lesson thank you so much I appreciate appreciate all your comments and watch out our next video Lesson bye class [Music]