1/45
Looks like no tags are added yet.
Name | Mastery | Learn | Test | Matching | Spaced |
---|
No study sessions yet.
crater
basin
bowl shaped hole
created by an explosion
conduit
pipe shaped
brings magma from a reservoir to the vent at the surface
magma go to reservoir to vent to surface
magma chamber
large POOL of liquid rock
benath the surface
reservoir - magma
ash cloud
cloud of TEPHRA and GASES
forms downwind of an erupting volcano
lava flow
MOLTEN ROCK that flows onto the earth’s surface
there is lava flow after an eruption
sill
flat intrusion of IGNEOUS ROCK
forms between preexisting layers of rock
magma moves SIDEWAYS
cone
steep
conical shaped hill
formed by layers of volcanic material
volcano
mountains
can erupt any time
generally CONE SHAPE
magma
inside volcano
lava
outside volcano
active
has tendency to erupt
already erupting
FULL of hot magma
active
Mt. Bulusan, Mt. Mayon
dormant
not erupted in a long time
SLEEPING
nag erupt before, mga 10,000 years ago
POTENTIAL to erupt in the future
slowly filling up the magma chamber
dormant
Mt. Makiling
extinct
geologists say it will NOT ERUPT again based on the volcano’s erupting history
lack of magma source
erupted 100,000 years ago
inactive magma chamber
extinct
Mt. Thielsen in Oregon USA
cinder
resulted from an eruption from a single vent
volcano is bowl shaped bc of a single vent
forms the summit
fluid lava
quickly cools and hardens, builds a small and steep hill
lava flow is short and not very far bc it QUICKLY COOL
summit
peak or highest point of a mountain
cinder
Mt. Smith, Babuyan Island
shield
low and dome shape
the name comes from a ___ of medieval knights
slowly shaped by LAVA FLOWS
shield
Mt. Biliran, Leyte
stratovolcano or composite
most common type of a volcano
formed by alternating layers of lava and pyroclastic material from MULTIPLE ERUPTIONS
tall mountains
DEEP STEEP sides
LAVA is VISCOUS (thick) but can also be fluid
eruption is VIOLENT
QUIET lava flows bc of viscosity
layers of ash, lava, and rock compiled
lava dome (caldera)
big hole forms when a volcano erupts so strong
the ground above collapses bc the magma underneath has blown up
when a volcano erupts, big hole will happen bc of the lakas ng eruption
nasisira ung nasa taas bc ung magma sa baba nag blow upl
lava dome
Taal VOlcano
side vents
small cracks on the sides
explosive
violent
lots of ash, gas and volcanic bombs
LARGE fragments
occurs when magma is THICK
gas is trapped and builds up then boom
quiet/non explosive
emits lots of lava from a fissure or crack on the surface
lava is from magma w low silica that has low viscosity
ground sinking
subsidence/sinking, tilting, bulging
lumulubog
seismic activity
when magma rises, it breaks rocks along the way
gases
monitor types and rate of emission of diff gases
sensory observations
using the 5 senses of our body
white steam
just water vapor
gray steam
steam contains volcanic ash
crater glow
due to the presence of magma or near the crater
ground swells/ground tilt
due to the magma intrusion
localized landslides
rocks can fall and this can happen from the summit even if there is no heavy raini
increased temp of water
there is a presence of certain compounds such as magmatic carbon dioxide or high helium isotopes
ballistic projectile
rocks that an eruption sends into the air and then fall back to the ground
ash fall or TEPHRA fall
hard, extremely abrasive, mildly corrosive, conducts electricity when wet
ash fall
tiny particles
tephra fall
fragments of ROCKS
pyroclastic flows
high density, mixtures of hot, dry rocks fragments and hot gases that move away from the vent at high speed
can create fire
lava flow
stream of molten rock that flows out of a volcano
volcanic gases
from vents and fumaroles on active and dormant volcanoes
debris avalanche
massive collapse of volcano, triggered by an earthquake or eruption
lahar
mudflow, composed of rocky debris, water, and pyroclastic material
flows down from a volcano, often along a river valley