* *的边界发生在板块之间的边界* *。不同的边界是两个板块正在积极*推分开*通过岩浆的上升由于地幔对流细胞。不同边界负责大陆分裂,甚至海洋盆地的形成,不同的边界成为大洋中脊。例如,东非裂谷(发散边界),是非洲板块分开,从大陆分离索马里。最终一个海,那么海洋将形成东非裂谷的破碎板之间成为大洋中脊。* *热点可能发生数千公里远离板块的边界* *。热点就是*板正在* *的岩浆*。热点负责岛屿链,比如那些在夏威夷,形成板幻灯片在羽甚至火山在陆地上,像黄石。夏威夷群岛的谎言数千公里远离太平洋板块的边界上,他们。最主要的事情要记住的是,不同的边界发生在板块的边界。 Hot-spots occur thousands of kilometres away from the boundaries of the plates they emerge at. ## Biscuit and Jelly Model To give you a simplified and intuitive understanding, imagine you have a large dish of jelly, on the stove, on which you place a large biscuit. When you heat up the jelly, the biscuit breaks into smaller pieces, creating lots of plates, which drift apart. This is a divergent boundary. Now imagine another biscuit which you slide over the tub of jelly. Instead of breaking the biscuit apart, the jelly rises up and punches a single hole in the biscuit. As the biscuit slides over this plume of jelly, it keeps punching single holes through the biscuit, rather than break it apart. At the divergent boundary you end up with lots of smaller biscuits (plates) moving over a sea of jelly (magma). At the hot-spot, you have a whole-biscuit sliding over a small plume of jelly which periodically punches Jelly Holes (islands) through the plate.