The video was initially okay, when the empty space (supposedly the ocean) between the two continental plates(CP) decreases, but it doesn't show why it decreases. It's due to the subduction of oceanic plate under the continental plate. However, it became inaccurate when it showed subduction of CP under another CP. Rather than subduct, the two CP would probably actually collide to give Himalayas type fold mountains. This video would only be consistent if it's CP colliding with oceanic plate.
@Ancr24 Actually, continental crust can subduct under continental crust, but it is an exceptional process. Discovery of microdiamonds and other high pressure minerals in exposed continental rocks in places such as Kazakhstan prove the crust was once at great depth. But yeah, it's not the best thing to use a rare circumstance to teach the general principle
This video is...rubbish. -.- Correct me if I'm wrong, but when two continental plates collide, neither plate would subduct. Subduction occurs when denser plate (oceanic plate) sinks under the less dense overidding plate (continental plate or less dense oceanic plate). Well, that's according to the notes I have.
plate tectonics is not a process. it does not occur DURING continental drift. continental drift was a theory which has been superseded by the theory of plate tectonics. Continents are parts of large plates that move. plate tectonics is the theory that describes this movement and its consequences. Think about the earth's outer layer, without all the water covering it. its split up in big plates that move. The continents just happen to be higher up than the parts covered by water, that's all.
The video was initially okay, when the empty space (supposedly the ocean) between the two continental plates(CP) decreases, but it doesn't show why it decreases. It's due to the subduction of oceanic plate under the continental plate. However, it became inaccurate when it showed subduction of CP under another CP. Rather than subduct, the two CP would probably actually collide to give Himalayas type fold mountains. This video would only be consistent if it's CP colliding with oceanic plate.
Ancr24 3 months ago
@Ancr24 Actually, continental crust can subduct under continental crust, but it is an exceptional process. Discovery of microdiamonds and other high pressure minerals in exposed continental rocks in places such as Kazakhstan prove the crust was once at great depth. But yeah, it's not the best thing to use a rare circumstance to teach the general principle
161803 5 days ago
This video is...rubbish. -.- Correct me if I'm wrong, but when two continental plates collide, neither plate would subduct. Subduction occurs when denser plate (oceanic plate) sinks under the less dense overidding plate (continental plate or less dense oceanic plate). Well, that's according to the notes I have.
Ancr24 3 months ago
plate tectonics is not a process. it does not occur DURING continental drift. continental drift was a theory which has been superseded by the theory of plate tectonics. Continents are parts of large plates that move. plate tectonics is the theory that describes this movement and its consequences. Think about the earth's outer layer, without all the water covering it. its split up in big plates that move. The continents just happen to be higher up than the parts covered by water, that's all.
tacobreakfast 3 months ago
i like this video bkas it is very much useful to teach in Geography class.
ajay99966 9 months ago
@ajay99966 I wouldn't use this video to teach. It's inaccurate
tacobreakfast 3 months ago