| A | B |
|---|
| viscosity | a liquid's resistance to flow |
| volcano made entirely of pyroclastic material | cinder cone |
| volcano made entirely of lava | shield |
| hot spot | mantle plume that forms volcanoes in the middle of tectonic plates |
| when magma forms in the mantle | high temperature and low pressure |
| plate tectonics | explains both mountain building and volcanoes |
| dormant volcano | volcano that has erupted in the past, but not presently |
| active volcano | volcano that is currently showing signs of erupting |
| what type of eruption produces a pyroclastic flow | explosive |
| where mid-ocean ridges are found | divergent boundaries |
| thick magma has a _________ | high silica content |
| another name for composite volcano | Stratovolcano |
| type of eruption that would resemble a nuclear explosion | explosive eruption |
| lava that forms under water | pillow lava |
| lava that forms a brittle crust | aa |
| pyroclastic material that is smalles in size | lapilli |
| classification of pyroclastic material | size |
| classification of lava | viscosisty/consistency |
| why magma rises | less dense than surrounding rock |
| a deep crack | rift |
| main vent | crater |
| circular pit around a volcano | caldera |
| nickname for Pacific plate | Ring of Fire |
| tiltmeter | measures the slope of a volcano |
| column of rising hot ash, debris, gases | what you would see during an explosive eruption |
