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[[Immagine:VolcanicBombMojaveDesert.JPG|thumb|Bomba di lava]]
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Una '''bomba di lava''' è un "goccia" di roccia ardente [[tefriti|tefrite]] avente un diametro superiore ai 64 [[millimetro|mm]], che si forma durante un'eruzione vulcanica.
== Altri progetti ==
Durante questo evento diversi frammenti di [[lava]] dotati di una specifica [[viscosità]] vengono espulsi dal [[vulcano]].
Prima di raggiungere il suolo si raffreddano fino a solidificarsi.
Le bombe di lava possono essere scagliate a molti [[chilometro|chilometri]] di distanza dal luogo dell'eruzione, e spesso acquistano forme aerodinamiche durante il loro volo.
A meno che non solidifichi durante il volo, una bomba di lava può sviluppare sulla superficie esterna delle fenditure, mentre la sua parte interna continua a espandersi. Questo tipo di lava è conosciuto come '''bomba a crosta di pane'''. Se la temperatura della bomba rimane elevata, questa, al momento in cui tocca il suolo forma una cosiddetta '''bomba sterco di vacca'''.
Una bomba vulcanica rappresenta un elevato rischio vulcanico, e può causare gravi ferite e causare dei morti nella zona dell'eruzione. Un tale incidente è avvenuto presso il vulcano [[Galeras]] in [[Colombia]] nel [[1993]]. Sei persone vicino alla summità del vulcano furono gravemente feriti a causa di diverse bombe di lava che il vulcano ha inaspettatamente espulso.
== Altri progetti ==
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