Volcano π Flashcards
The study of volcanoes is called??
Volcanology
black smokers also know as?
Deep sea vents
Are place where two plates usually an oceanic plate and a continental plate collide
Convergent plate boundaries
is the name given to volcanic areas believed to be formed by mantle plumes which are hypothesis to be colums of hot material rising from the core mantle boundary in a fixed space that cause large volume melting
Hotspot
these ___ are picked up by volcanologist and the volcano is monitored
Warning sign
Instruments that measure ground deformation
Seismometers and seismograph
instruments that detect and measure volcanic gases
EMB, leveling,GPS,tilt
Instruments that determine how much lava si moving underground
VLF,EM-31
an__ is magma that cools beneath that surface of a volcano without erupting
Intrusions
An ___ is an eruption of material that cools at the surface of volcano
Extrusion
The top part of Earthβs mantle called???
Asthenosphere
Volcanoes are constructed this way mainly of two materials??? ano ito?
Lava and ash
Some emit steam and searing hot noxious glasses some eject choking and blinding sunlight blocking ash white others expel liquid rock called??
Lava
Are notorious for lying dormant for hundred of years and then exploding suddenly and violently only to fall silent again for generation
Composite
Which can be thousand of meters high and a hundred kilometers wide steadily exude free flowing lava
Shield volcanoes
Molten rock beneath the Earthβs surface
Magma
A small come shaped volcano by an accumulation of volcanic debris
Parasitic cone
A flat piece of rock formed when magma gardens in a crack in a volcano
Sill
An opening in Earthβs surface through which volcanic materials escape
Vent
The side of a volcano
Flank
Molten rock that erupts from a volcano and solidifies as it cools
Lava
Mouth of a volcano it surround a volcanic vent
Crater
An underground passage magma travels through
Conduit
Highest point of a volcano;apex
Summit
Entrance of a volcano . That part of conduit that ejects lava and volcanic ash
Throat