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Volcano Terms
Terms related to volcanoes
| Question | Answer |
|---|---|
| a process that occurs at divergent plate boundries | rifting |
| is an instrument that detects earth's movements | seismometer |
| a large circular depression, with a diameter of about 5 km lies within the vocano's summit | caldera |
| those that form when explosive eruptions of sticky lava alternate with quieter eruptions of volcanic rock bits | composite-cone volcano |
| melted rock, it is less dense than its other surrounding material | magma |
| is made of layers of cinders | cinder-cone volcano |
| is any opening in earth's crust through which hot gases, rocks, and melted material erupt | volcano |
| forms when lava flows quietly from a crack in earth's crust | sheild volcano |
| extremly hot places deep within earth's mantle | hotspot |
| magma then rises and forms a chain of volcanoes | island arc |
| magma that flows out onto earth's surface from a volcano, when magma researches earth's surface | lava |