Untitled Storyboard
Siužetinės Linijos Tekstas
- Skaidrė: 1
- Oceanic-Continental convergence
- Good morning class today were going to talk about The Earth's Active processes .Tell me what you know about the theme
- Oceanic-continental convergenceIf by magic we could pull a plug and drain the Pacific Ocean, we would see a most amazing sight - a number of long narrow, curving trenches thousands of kilometers long and 8 to 10 km deep cutting into the ocean floor.
- yeaa and that the Trenches are the deepest parts of the ocean floor and are created by subduction.
- Skaidrė: 2
- Convergent Boundaries
- I still don't understand how convergent boundaries work or even is.
- Convergent Boundaries The size of the Earth has not changed significantly during the past 600 million years, and very likely not since shortly after its formation 4.6 billion years ago. The Earth's unchanging size implies that the crust must be destroyed at about the same rate as it is being created, as Harry Hess surmised. Such destruction (recycling) of crust takes place along convergent
- Skaidrė: 3
- Today I will be here talking about Divergent Boundaries.
- Divergent Boundaries occur along spreading centers where plates are moving apart and new crust is created by magma pushing up from the mantle. Picture two giant conveyor belts, facing each other but slowly moving in opposite directions as they transport newly formed oceanic crust away from the ridge crest.
- Perhaps the best known of the divergent boundaries is the Mid-Atlantic Ridge. This submerged mountain range, which extends from the Arctic Ocean to beyond the southern tip of Africa, is but one segment of the global mid-ocean ridge system that encircles the Earth.
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