From the video related to plate tectonics, I found it very resourceful because it really shows the 3D version of Earth’s outer side and inner side. The 2 video’s message was clear and simple as it explained the process and movement of how plate tectonics really work and what causes it to diverge, converge or transform. From the 2 videos it really sums up the formation of Earth’s ocean, land and mountain. The main reason behind the movement of the plate and its process was the heat convection from the Asthenosphere (the upper layer of the earth mantle). I like how divergent and convergent are connected to each other as the divergent plate moves apart and spreads further it leads to plate collides with one another which we get a convergent plate.
The second video explained about plate tectonic global impacts and I got to learnt interesting stuff about the relations between plate boundaries earthquake. So, to determine plate boundaries I believed scientists connect to earthquakes plates which determine if the plate is old or new. So, I guess Japan’s boundary is old and I was right because the deepest trench is the Mariana trench which is located near pacific ocean.
At the end I was surprised that every year the Atlantic Ocean spreads at 1 and 2 cm per year but because of global warming is it possible in future that it can spread in km?