Restless Earth 0.0 / 5 ? GeographyRestless EarthGCSEAQA Created by: kritinaCreated on: 05-05-16 08:49 What is a crust? Crust is the outer layer of the earth 1 of 22 What is a plate? Plate is a section of the earth's crust. 2 of 22 What is a plate margin? Plate margin is the boundary where teo plates meet. 3 of 22 What is a mantle? Mantle is the dense,mostly solid layer of the earth between the outer core and the crust. 4 of 22 What is a convection currents? Convection currents is the circular currents of the heat in the mantle. 5 of 22 What is a destructive plate margin? Destructive plate margin is a plate margin where two plates are moving towards each other resulting in one place sinking beneath the other. 6 of 22 What is a constructive plate margin? Constructive plate margin is a plate margin where two plates are moving apart. 7 of 22 What is a continental plate? Continental plate is a tectonic plate made of low density continental rock that will not sink under another plate. 8 of 22 What is a oceanic plate? Oceanic plate is a tectonic plate made of dense ironrich rock that frorms the ocean floor. 9 of 22 What is a subduction? Subduction is when oceanic crust sinks under continental crust at a destructive margin. 10 of 22 What is a collision? Collision is when two plates of continental crust meet 'head on' and buckle. 11 of 22 What is a volcano? Volcanois an opening in the earth's crust through which molten lava, ash and gagses are ejected. 12 of 22 What is a conservation plate marign? Conservative plate margin is a plate margin where two plates are sliding alongside each other. 13 of 22 What is an earthquake? Earthquake is a sudden and often violent shift in the rocks forming the earth's crust, which is felt at the surface. 14 of 22 What is a fold mountains? Fold mountains are large mountain ranges where rock layers have been crumpled as they have been forced together. 15 of 22 What is ocen trenches? Ocean trenches is a deep sections of the ocean, usually where an oceanic plate is sinking below a continental plate. 16 of 22 What is a composite volcano? Composite volcano is a steep-sided volcano that is made up of a variety of materials, such as lava and ash. 17 of 22 What is a shield volcano? Shield volcano is a broad volcano that is mostly made up of lava. 18 of 22 What is a subsistence? Subsistence is a farming to provide food and other resources for the farmer's own family. 19 of 22 What is a terraces? Terraces is a steps cut into hillsides to create areas of flat land. 20 of 22 What is a irrigation? Irrigation is a artificial watering of the land. 21 of 22 What is a hydroelectric power? Hydroelectric power ius 22 of 22
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