| A | B |
|---|
| landform | a physical feature on Earth's surface |
| geologist | a scientist who studies Earth's structure |
| volcano | an opening in Earth's crust that magma flows out of |
| lava | magma that reaches Earth's surface |
| hot spot | magma that is not moving |
| earthquake | sudden movement of Earth's crust |
| fault | a crack in the surface of Earth |
| magnitude | a measurement of the energy of an earthquake |
| erosion | movement of weathered or soil from one place to another |
| atmosphere | the gases that surround Earth |
| continental drift | why continents far apart have similiar features |
| ocean floor | includes trenches, rift valleys, and abyssal plains |
| tsunami | a giant wave caused by an earthquake under the ocean |
| chemical weathering | when the object turns into something different (rust) |
| crust | outer layer of Earth |
| mantle | second layer of Earth |
| core | inner layer of Earth |
| hydrosphere | water around the Earth |
| atmosphere | air around the Earth |
| delta | formed when a river picks up soil and deposits it at the mouth of a river |
| Ring of Fire | where a volcano is most likely to erupt because its at the edges of plates |
