3rd Periodic Test Flashcards
G9
It is a vent, hill, or mountain that erupts.
Volcanoes
Have erupted within the last 600 years.
Active
examples of Active vollcanoes
Mount Mayon, Mt. Biliran, Mt. Hibok-hibok
Active but not erupting.
Dormant
Expected to erupt anytime soon.
Dormant
examples of Dormant volcanoes
Mahagnao VOlcano
Have not had any eruption in the past 10 000 years.
Expected not to erupt anymore in the future.
Extinct
simplest type of volcano
Cinder Cone
example of extinct volacano
Mount Guinsiliban
are symmetrical cones
Composite/Stratovolcanoes
are formed from lava flows producing broad sloping sides and shield-like structures
Shield
less viscous basaltic lava
shield
Volcanoes can be classified as
effusive or explosive.
involve a pour of basaltic magma that is relatively low in viscosity and gas content.
Effusive eruptions
involve magma of high viscosity and gas content.
Explosive eruptions
5 types of volcanic eruptions
Phreatic, Phreatomagmatic, Strombolian, Vulcanian, Plinian
It’s a steam-driven explosion and often precedes or accompanies another type of volcanic eruption.
Phreatic
Example of Phreatic
Mt. Kanlaon
Involves the eruption of magma that reacts to external water.
Phreatomagmatic
example of Phreatomagmatic
Mt. Taal
Fountains of bursting glowing lava
Strombolian
Example of Strombolian
Mt. Mayon
Tall eruptions that go up to 20km high. Short, explosive and violent.
Vulcanian
Example of Vulcanian
Mt. mayon