SCIENCE Flashcards
A vent, hill, or mountain that erupts, releasing molten rocks, rock fragments, and gaseous materials onto Earth’s surface.
Volcanoes
T OR F
Volcanoes are mostly found in the Pacific Ring of Fire, also known as the Circum-Pacific Belt.
T
Volcano comes from the Italian word _____ which means “burning?
vulcano
Is “Vulcan” The God of Fire
Vulcan
What does PHIVOLCS mean
Philippine Institute of Volcanology and Seismology
The SIDE of the volcano
Flank
MOLTEN ROCK that erupts from a volcano and solidifies as it cools.
Lava
MOUTH of a volcano
Crater
The HIGHEST part of a volcano.
Summit
THE ENTRANCE part of a conduit that ejects lava and ash.
Throat
FRAGMENTS of lava and rock smaller than 2mm.
Ash
A CLOUD of ash
Ash Cloud
Molten rock beneath the EARTH”S SURFACE
Magma
UNDERGROUND PASSAGE magma travels through. It connects the magma chamber to the throat.
Conduit
FLAT peice of rock formed when magma hardens.
Sill
Bodies of Magma that CUT THROUGH ACROSS the layering of adjacent rocks.
Dike
SMALL CONE shaped volcano formed by the accumulations of volcanic debris.
Parasitic cone
The ACTUAL opening where the lava and ash come from.
Vent
What is the Correct order of the formation of Volcanos?
1,)MAGMA beneath the Earth’s surface causes pressure. The pressure causes cracks in the rocks.
2,) The magma REACHES the surface.
3,) The magma EJECTS lava flow and ash deposits.
4,) Over time, it will COOL down and solidify.
5,) It will continue to eject lava until it gets BIGGER and bigger.
It is the SIMPLEST type of Volcano?
Cinder Cone
Also known as stratovolcanoes
Composite Volcanoes
- Also known as scoria cones
Cinder Cones
Formed when non-acidic BASALTIC lava flows of high viscosity producing broad sloping sides and shield-like structures.
Sheild Volcano
These volcanoes are active but not erupting;
Dormant Volcanoes
These volcanoes have not had any eruption in the past 10 000 years and are expected not to erupt anymore in the future.
Inactive
Driven by STEAM due to rapid heating beneath a volcano.
Phreatic
Occurs when water interacts with magma.
Phreatomagmatic
Fountains of either basaltic or andesitic lava
Strombolian
team, viscous lava, volcanic material that VERY QUICKLY GOES DOWN.
Pelean
TALL ERUPTIONS that go up to 20km high. Short, explosive and violent.
Vulcanian
