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volcanoes
for MACAT science
59
Science
7th Grade
03/20/2013

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Cards

Term
Devil's tower in Wyoming is an example of this
Definition
an extinct volcano at has eroded away so that you can see the original conduit
Term
VEI
Definition
Volcano Explostivity Index
Term
active volcano
Definition
a volcano that has erupted in the last 100 years
Term
all volcanoes have metals in them so where do they get them from?
Where did those come from?
Definition
meteors that hit the earth
they come from super novas or reall big stars that are exploding
Term
ash
Definition
the stuff that happens after burning something
Term
asteroid
Definition
is a big object outside the sound barrier
Term
caldera
Definition
The large hole at the top of the volcano that is created when the volcano collapses into the empty magma chamber beneath it
Term
cataclyismic
Definition
very disastrous, destructive, and is very fatal to many
Term
cinder cone
Definition
a volcano made up of cinders and rock that has a medium amount of eruption and has fragments or cinders with a medium amount of silica content and usually doesn't exceed 1,000 feet (except in Mexico)
Term
comet
Definition
is outside the sound barrier and is a small body of ice and dust of rock that has a "tail"
Term
composite/strato volcano
Definition
A volcano that has a combonation of alternating layers of lava and cinders and volcanic debris that has really big explosions and a lot of silica content that is usually near a subduction zone
Term
crater
Definition
a dip (bowl shaped) opening at the top of the volcano (magma could still come out because the magma chamber isn't all dry)
Term
does silica increase both the density and viscosity of the lava?
Definition
no, it only increases the viscosity
Term
dormant volcano
Definition
a volcano that has not erupted in the last 100 years but before a 1000 years ago
Term
extinct volcano
Definition
a volcano that hasn't erupted in 1000 years but can erupt again (but usually doesn't)
Term
how violently do each of the types of volcanoes erupt?
Definition
shield volcanoes arupt gentley
cinder volcanoes erupt with a small pop
strato volcanoes erupt with a big POP
Term
if cabon dioxide and oher volcanic gases are being released through fumaroles is there going to be a volcanic eruption soon?
Definition
no because lots of gases are emitted from Yellowstone but it isn't erupting right now
Term
is volcanic ash really dense but really light and is easy to blow around?
Definition
It is really dense but it is also really heavy so no
Term
lahar
Definition
water mixed with dirt, rocks and other things found on a volcano's side creating a mud flow that is really liquidy (can kill you)
Term
lava
Definition
molten rock above/ on the Earth's surface
Term
landslide
Definition
a mass of dirt and rock that slides down the volcano side and is very distructive (can kill you)
Term
magma
Definition
molten rock beneath the earth's surface
Term
mantle plume/ hot spot
Definition
a place that is really warm that has a lot magma that causes a volcano to pop up
Term
meteor
Definition
inside the sound barrier (a meteor)
Term
meteorites
Definition
a meteor that has touched earth
Term
meteoroids
Definition

medium-small object outside of the sound barrier

A small body moving in the solar system that would become a meteor if it entered the earth's atmosphere

Term
order the three main types of volcanoes in order from largest to smallest (in thier sizes)
Definition
cinder cone, compostite/strato, and shield
Term
pyroclastic flow
Definition
has a super hot (really warm) dense cloud of ash and volcanic gases and rock fragments that travel down a mountain up to 100 miles an hour
Term
shield volcano
Definition
A volcano that is very wide and is very tall (doesn't appear that way because a lot of it is submerged under the water
Term
silica
Definition
a material that is a compund of silicon and oxygen that makes volcanoes more explosive and it makes the lava more viscous
Term
super volcano
Definition
a really big volcano that are really powerful and it can eject volcanic matter thousands of miles away and if the ash gets caught in the air stream it'll travel around the world and cause the temperatures to drop
Term
tsunami
Definition
a ocean wave that can be really tall and is caused by seismic activity (like a really big wave (can kill you)
Term
viscosity
Definition
how fast the magma flows or how thick it is and how much it resits flowing
Term
volcanic gases
Definition
gases that leave the volcano during or before a volcanic eruption (can include carbon dioxide)
Term
volcano
Definition
a fissure in the earth's crust (or in the surface of some planet) through which molten rock and gases erupt out
Term
what US states have volcanoes in them?
Definition
Alaska, Hawaii, Washington, Oregon, California, Arizona, New Mexico, Utah, Idaho, Wyoming, and South Dakota
Term
what are five ways that volcanoes can kill you?
Definition
pyroclastic flow, tsunami, landslide, lahar, and gases (note that the gases destroy crops then starving you)
Term
what are stratovolcanoes also called?
Definition
A composite volcano
Term
what country is Krakatoa located in?
Why's it a big deal?
Definition
Indonesia, cuz you could hear the blast around the world
Term
what does a cinder cone volcano look like?
Definition
a steep cone shaped dome that rarely exceeds 1000 feet
Term
what does clast mean
Definition
fragment
Term
what does conduit mean?
Definition
the channel or spot that the magma runs up so that it can reach the surface and make a volcanic eruption
Term
what does magma chamber mean?
Definition
the place where the magma is held up under the volcano
Term
what does pyro mean?
Definition
fire
Term
what don't all volcanoes have?
Definition
side vents
Term
what is a pyroclastic flow made up of?
Definition
REALLY hot volcanic gases, ash, and rock
Term
what is the tallest shield volcano in the world?
Definition
mauna kea in Hawaii
Term
what is the tallest type of volcano that has a broad flat dome?
Definition
a shield volcano
Term
what kind of volcano would you probably find along or at a subduction zone?
Definition
a composite/strato volcano
Term
what makes volcanoes more explosive then others?
Definition
silica content
Term
what type of volcano is Mt. Vesuvius since it isn't located over a hot spot?
Definition
a strato/composite volcano
Term
what type of volcano is Yellowstone?
Definition
a super volcano
Term
what's a cast?
Definition
have the 3 dimensional shape of the actual object
Term
what's a fumarole?
Definition
a hole in a volcanic area that hot smoke and gases can escape
Term
what's a mold?
Definition
have the outline of the original object but no the shape because it can only be filled with material to make the actual object
Term
what's a really good way to tell if a volcanic eruption is coming soon?
Definition
if here is an increase in earthquakes (seismic activity)
Term
what's another name for a stratovolcano?
Definition
a composite volcano
Term
where is Mount Shasta?
Definition
California
Term
where is Mount St. Helens?
Definition
In Washington (its a volcano if you are doing the def. then term mode)
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