| A | B |
| cinder cone volcano | when tephra falls to the ground it forms steep-sided loosely packed cone |
| shield volcano | has quiet eruptions of basaltic lava spread out in flat layers |
| vent | opening where lava flows out |
| tephra | bits of rock or solidified lava that is dropped from the air |
| hot spot | where hot rock is forced up toward the crust where it melts partially |
| volcano | an opening in the Earth that erupts gases, ash, and lava |
| lava | molten rock material flowing from volcanoes onto Earth's surface |
| composite volcano | made when the cycling of lava is repeated over and over making alternate layers |