121004
| Question | Answer |
| What is an ocean trench? | A long, narrow deep gash formed under the ocean |
| Why are contrastive plate margins given that name? | When the two plates are moving away from each other, new crust is formed |
| Why are destructive plate margins given that name? | Oceanic crust is being destroyed |
| What happens at a collision plate margin? | The two plates are moving towards one another, neither plate is being subducted because both plates carry continental crust. Fold mountains are formed |
| What occurs at a conservative plate margin and why? | Earthquakes. because the two plates try to move past each other, but sometimes get stuck and energy builds up until they suddenly jolt free causing a violent earthquake. |
| What is the ring of fire? | A ring surrounding the Pacific Ocean where earthquakes occur on the edge |
| Name the structure of the earth (start from the middle( | Inner core, outer core, Mantle, Crust |
| Name two types of crust? | Continental crust and oceanic crust |
| Name two differences between oceanic and continental crust? | Continental crust is thicker than oceanic crust AND it's made of granite, oceanic crust is made from basalt |
| What are tectonic plates? | Are large cracks in the earths surface |
| What causes plates to move? | Convection currents in the mantle |
| What are plates made up of? | Lithosphere |
| Name the 4 different types of plate margins? | Destructive, constructive, conservative, collision |
| What happens at a destructive plate margin? | The two plates are pushed or subducted beneath the other, and magma is forced up to the surface |
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