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Plates Glossary
| Term | Definition |
|---|---|
| Collision margin | where two continental plates are moving towards each other |
| Conservative margin | where two tectonic plates are moving past each other |
| Constructive margin | where two tectonic plates are moving apart ands new crust is formed |
| Destructive margin | where two tectonic plates are moving together and oceanic crust is destroyed by subduction |
| Continental plate | the part of the Earth's crust that makes the continents |
| Core | The centre of the Earth |
| Crust | The solid outer layer of the Earth |
| Fold moutains | mountains formed by the bending and buckling of the rocks where two tectonic plates collide |
| Fissure | A line of weakness in the crust, such as a fault, through which lava may erupt |
| Island arc | a chain of volcanic islands |
| mantle | the layer of the earth below the crust made of magma |
| Oceanic plate | the part of the earth's crust which is under the oceans |
| Ocean trench | a long, narrow and very deep gorge in the ocean floor |
| plate | a large, rigid slab of the Earth's crust |
| Plate margins | the boundary where two plates meet |
| Shield volcano | a low, flat volcano, like an upturned shield, made from basic lava |
| subduction zone | an area of the Earth's crust where one tectonic plate descends below another |