Terms : Hide Images
| 4858189828 | hot spot | place where molten material from the mantle reaches the lithosphere | 0 | |
| 4858217306 | plate tectonics | the theory that the lithosphere of earth is divided into plates, most of which are in constant motion | 1 | |
| 4858218622 | tectonic cycle | the cycle of processes that build up and break down the lithosphere | 2 | |
| 4858218623 | subduction | the process of one crustal plate passing under another | 3 | |
| 4858219614 | volcano | a vent in the surface of earth that emits ash, gases or molten lava | 4 | |
| 4858220863 | divergent plate boundaries | areas beneath the ocean where plates move away from each other | 5 | |
| 4858220864 | seafloor spreading | the formation of new ocean crust as a result of magma pushing upward and outward from earth's mantle to the surface | 6 | |
| 4858222862 | convergent plate boundaries | areas where plates move toward one another and collide | 7 | |
| 4858224321 | transform fault boundary | an area where tectonic plates move sideways past each other | 8 | |
| 4858224322 | fault | a fracture in rock caused by a movement of earth's crust | 9 | |
| 4858226799 | fault zone | a large expanse of rock where a fault has occurred | 10 | |
| 4858226800 | earthquakes | the sudden movement of earth's crust | 11 | |
| 4858228541 | seismic activity | the frequency and intensity of earthquakes | 12 | |
| 4858228542 | epicenter | the exact point on the surface of earth directly above the location where rock ruptures during an earthquake | 13 | |
| 4858231816 | richter scale | a scale that measures the largest ground movement that occurs during an earthquake | 14 |
