Tectonic Plates

Question	Answer
Destructive plate boundaries - Volcanoes	When two plates move together the oceanic crust is pushed under the continental crust to form a subduction zone. The continental crust is buckled to form a mountain range. The oceanic crust melts to make magma and this magma rises to crack through crust to form new volcanoes.
Destructive plate boundaries - earthquakes	As the plates move against each other pressure builds up. A sudden movement of a plate causes the pressure to be released in the form of an earthquake.
Destructive plate boundaries - diagram	Image: f21ace58-90f1-42b8-82b1-a5d9e08096cf (image/png)
Conservative plate boundaries	When two plates move sideways against each other no new crust is formed therefore very few volcanoes are formed, however earthquakes are strong and frequent. The plates may lock together as they move and build up pressure. This pressure sends shock waves up to the surface
Conservative plate boundaries - diagram	Image: d13def73-4826-4b15-ba4c-0e020ba88b50 (image/jpg)
Constructive plate boundaries	When two plates move away from each other new crust is formed and magma rises from the mantle. There are frequent volcanic eruptions that form large ridges above the ocean floor (mid-ocean ridges).
Constructive plate boundaries - diagram	Image: 1b6d4901-0e79-4481-bb4a-492775a87577 (image/png)

Resource summary

	Created by Sarah Mercer almost 9 years ago