ito na bulkan na Flashcards
Definition of volcano
A volcano is a vent or opening in the Earth’s crust through which molten rock, ash, and gases are expelled during volcanic eruptions. Volcanoes can be classified based on their eruption style, shape, and activity level.
Effusive Volcanoes
(based on eruption style)
Characterized by relatively gentle eruptions with the slow release of lava,
producing lava flows. Examples include shield volcanoes and lava domes.
Explosive Volcanoes
(based on eruption style)
Characterized by violent eruptions with the rapid release of gas and fragmented volcanic material, such as ash, pyroclastic flows, and volcanic bombs.
Examples
include stratovolcanoes (composite volcanoes) and calderas.
Shield Volcanoes
(based on shape)
Broad, gently sloping volcanoes formed by the accumulation of fluid lava
flows. They have a shield-like shape and are typically associated with effusive eruptions.
Stratovolcanoes (Composite Volcanoes)
(based on shape)
Steep-sided volcanoes composed of alternating layers
of lava flows, volcanic ash, and other volcanic debris. They are associated with explosive
eruptions and can reach great heights.
Cinder Cone Volcanoes
(based on shape)
Small, steep-sided volcanoes built from the accumulation of volcanic
debris, such as ash, cinders, and volcanic bombs ejected during explosive eruptions.
Lava Dome Volcanoes
(based on shape)
Rounded, steep-sided mounds formed by the extrusion of highly viscous
lava that piles up near the vent during effusive eruptions.
Active Volcanoes
(based on activity level)
Volcanoes that have erupted recently and are likely to erupt again in the future.
Dormant Volcanoes
(based on activity level)
Volcanoes that have not erupted in a long time but could potentially erupt
again in the future.
Extinct Volcanoes
(based on activity level)
Volcanoes that are not expected to erupt again because they are no longer
connected to a magma source or are considered geologically inactive.
