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Natural environment
Related to any physical feature of the earth's natural environment.
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Natural environment > Volcano 
fire fountain
Natural environment; Volcano
Where lava from a volcanic mountain forcefully, but not explosively, erupts, causing a vertical fountain like motion.
fissures
Natural environment; Volcano
Elongated fractures or cracks on the slopes of a volcano. Fissure eruptions typically produce liquid flows, but pyroclastics may also be ejected.
flank eruption
Natural environment; Volcano
An eruption from the side of a volcano (in contrast to a summit eruption. )
formation
Natural environment; Volcano
A body of rock identified by lithic characteristics and stratigraphic position and is mappable at the earth's surface or traceable in the subsurface.
Sub-categories
- Air (43)
- Atmosphere (59)
- Climate (1147)
- Climate change (10457)
- Coral reefs (23903)
- Deserts (738)
- Earthquake (7143)
- Flood (34)
- Forests (37)
- Grassland (35)
- Land mass (144)
- Landslide (66)
- Mountains (203)
- Plateau (39)
- Speleology (1857)
- Volcano (5852)
- Water (18527)