9.6-10.1 Flashcards
It measures seismic activities
Seismometers
detects tremors or small earthquakes that may indicate signs of a large earthquake
seismographs
measures the movement at the opposite side of a fault
laser range finder
measures change in tide level
tide gauge
measures radon gas dissolved in underground water
geiger counter
measures the constant,imperceptible movements of earthquake faults
global positioning system
global positioning system is also called as
GPS receivers
the record of the wave is called
seismogram
it suffered extensive damage due to giant waves
the Fukushima Daiichi Nuclear power plant
it resulted in a radiation leak and nuclear fallout
the fukishima daiichi disaster
if you are indors _____
drop to the ground
if you are outdoors _______
survey your surroundings
may generate tsunamis or giant sea waves
earthquakes
what is the first thing to do after an earthquake
calm down
what are the 6 steps to do after an earthquake
●check for injuries
●check for hazards
●listen to a battery-operated radio
●clean up
●anticipate tsunamis
●expect aftershocks
what are the kinds of hazards
●fire hazards
●damaged electrical wiring
●downed or damaged utility lines
●fallen objects in closets and cupboards
what are the 6 instruments used to measure seismic activities
●seismometer
●global positioning system
●tide gauge
●geiger counter
●seismograph
●laser range finder
They found out that the earth’s deep layers are as rough or even more rough than the layer we live in.
Jessica Irving and Wenbo wu
releases tons of dust and ashes
volcanic eruptions
when did Mount pinatubo unleash its wrath
June 15 ,1991
it is the second largest volcanic eruption this century
mount pinatubo eruption
produced by the accumulation of their own eruptive products
volcanoes
what will push these materials upward
pressure
it is the molten rock below the surface of earth that rises to the vent
magma
poured out of volcanic vents
magma
once magma is injected and flows on the surface, it is called ____
lava
what does the ascending magma commonly contains
●crystals
●fragments of surrounding (unmelted) rocks
●dissolved gases
what is magma a primarily liquid composed of?
●oxygen
●silicon
●aluminum
●iron
●magnesium
●sodium
●potassium
●titanium
●manganese
upon cooling , the liquid magma may percipitate crystals to form an _____
igneous rock
influenced by temperature and mineral water content
lava viscosity
what are the two factors that determine the type of eruption
●silica
●water content
if it is thin, it has ____
low silica content
if it is thick and pasty it has ____
high silica content
magma may also contain ____
superheated water
it may be compared to the dissolved gases in a bottle
superheated water
if you shake it ____ the gas separates from the drink and form bubbles
vigorously
it releases lava , rock fragments , and gases
volcanic activity
volcanoes are classified based on _____ and ________
●structure
●type of eruption
they are typically steep-sided , symmetrical cones with large bases
composite volcanoes
composite volcanoes are also called
stratovolcanoes
examples of composite volcanoes
●mount mayon
●mount fuji
●mount shasta
●mount hood
●mount st helens
●mount rainier
are the simplest volcanoes
cinder cone volcano
most cinder cones have a crater shaped like a ____
bowl
examples of cinder cone volcanoes
●mount paricutin
●krakatoa
are built almost entirely from lava flows
shield volcano
shield volcanoes are also called _____
hawaiian volcano
what is the most active volcano in hawaii
kilauea
they have become a favorite research
hawaiian volcanoes
the most studied of all volcanoes
kilauea
some of trh largest volcanoes in the world are
shield volcanoes
what are the types of volcanoes
●composite volcano
●cinder cone volcano
●shield volcano
the mass of molten rocks
lava
are hot dry mass of fragmented volcanic materials
pyroclastic materials
pyroclastic materials is also called
tephra
pyro clastic materials include _____ , _______ , and _______
●ash
●lapilli
●blocks and bombs
basic component of magma and lava
volcanic gas
volcanic gases include
●water vapor
●hydrogen sulfide
●sulfur dioxide
●carbon monoxide
●hydrogen chloride
became one of the worst disasters in history
mount pinatubo eruption
fresh volcanic ash is (4)
●coarse
●abrasive
●corrosive
●very unpleasant
