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Volcanoes
Volcano
| Term | Definition |
|---|---|
| Volcano | a mountain or hill, typically conical, having a crater or vent through which lava, rock fragments, hot vapor, and gas are being or have been erupted from the earth's crust |
| Lava | hot molten or semifluid rock erupted from a volcano or fissure, or solid rock resulting from cooling of this. |
| Magma | hot fluid or semifluid material below or within the earth's crust from which lava and other igneous rock is formed by cooling. |
| Ring of Fire | is a major area in the basin of the Pacific Ocean where a large number of earthquakes and volcanic eruptions occur |
| Hot Spot | a small area or region with a relatively hot temperature in comparison to its surroundings. |
| Shield Volcano | gently sloping mountain formed by repeated lava flows. |
| Composite Volcano | cone-shaped mountain formed from ash, cinders, and bombs. |
| Cinder Cone Volano | mountain formed by lava flows alternating with explosive eruptions. |
| Sill Dike | tabular sheet intrusion that has intruded between older layers of sedimentary rock, beds of volcanic lava or tuff, or even along the direction of foliation in metamorphic rock. |
| Batholith | a very large igneous intrusion extending deep in the earth's crust. |
| Lava Plateau | high, level area formed by repeated lava flows. |
| Extint | (of a volcano) not having erupted in recorded history. |
| Dormant | volcanoes that have erupted within historical times and are expected to erupt again. |
| Active | that has had at least one eruption during the past 10,000 years. |
| Element | |
| Viscosity | |
| Silica | |
| Pahoehoe | |
| AA | |
| Compound | |
| Volcanic Ash | |
| Magma Champer | |
| Crater | |
| Vent | |
| Pipe | |
| Caldera | |
| Hot Spring | |
| Gyser |