VOLCANO Flashcards
The word Volcano is derived from the name _____? a volcanic island in the Aeolian Islands of Italy. Originated from the name “Vulcan”, the god of fire in Roman mythology.
VULCANO
is an opening in the earth’s crust
through which lava, volcanic ash, and gases escape. Volcanic eruptions are partly driven by pressure from dissolved gas.
Volcano
What includes in the anatomy of a volcano?
- Crater
- Lava and magma
- Cone
- Vent
- Magma
- Magma Chamber
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is an approximately circular depression in the ground
caused by volcanic activity. It is typically a bowl-shaped
feature within which contains either multiple vents or a
singular vent.
Volcanic Crater
is a triangle-shaped hill formed as material from volcanic
eruptions pile up around the volcanic vent or opening in
Earth’s crust.
Volcanic Cone
is the weak point in the Earth’s crust where hot magma has
been able to rise from the magma chamber and reach
the surface.
Volcano’s vent
is a large pool of liquid rock beneath the surface of the Earth. The location beneath the vent of a volcano where molten rock (magma) is
stored prior to eruption. Also known as a magma storage zone or magma reservoir.
Magma chamber
are molten rocks emerging as a liquid onto Earth’s surface. The
temperatures of molten lava range from about 700 to 1,200 °C (1,300 to 2,200 °F).
Lava (Outside), Magma (Inside)
What is the place on Earth where volcanoes are mostly commonly found?
PACIFIC RING OF FIRE
What are the Types of Volcano Appearance?
Fissure Volcano, Cinder Cone Volcano, Composite Volcano, and Shield Volcano,
In geology, It’s a fracture or crack in rock along which there is a distinct separation; are often filled with mineral-bearing materials. On volcanoes, it’s is an elongate fracture or crack at the surface from which lava erupts.
Fissure Volcano
also known as pyroclastic cones, are the smallest and the simplest type of volcano with an elevation of 304.8 meters only. They are the world’s most common volcanic landform. These are volcanoes with steep conical hill and bowl-shaped crater.
Cinder Cone Volcano
Also known as Stratovolcano are majestic. Is a tall symmetrical shaped volcano with steep sides about 3,047 meters high. The magma composition in this type of volcano commonly contains large amounts of silica, water, and gases
Composite Volcano
is a mountain with broad, gently sloping sides
and a nearly circular base. It is formed when layers of lava
accumulate during nonexplosive eruptions. It is also built by
countless outpouring of lave from the summit, wherein lava flows
easily.
Shield Volcano
What are the Types of Volcano: Activity
Active Volcanoes, Dormant Volcanoes, and Inactive or Extinct Volcanoes
These types of volcanoes are present erupting until today. Some experts consider volcanoes active as long as their inactivity does not reach over 100 years.
Active Volcanoes
Most Active Volcano in the Philippines
Mayon Volcano, Albay
Latest Eruption: Early January of 2018
Most Active Volcano in the World
Kilauea, Hawai’i
Latest Eruption: Since 1983 to present
Volcanoes that have a capacity to erupt later
on. They may have a long intervals between their
last eruption and the latest one. There are volcanoes that has not erupted in almost 10,000 years but are still closely monitored because an eruption can occur at any time.
Dormant Volcanoes
Dormant Volcano in the Philippines
Mount Makiling, Calabarzon
Holocene Epoch (12,000 to 11,500
years ago)
Dormant Volcano in the World
Mount Fuji, Japan
December 16, 1707
Those which have not erupted in human history. These volcanoes still have the potential to erupt.
If a volcano has been inactive for more than
10,000 years, it is considered as ??
Inactive or Extinct Volcanoes
Extinct Volcano in the Philippines
Mount Butay, Camiguin
No Historical Eruption Known
