Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/60

Click to flip

60 Cards in this Set

  • Front
  • Back
magma that is a mix of basaltic and rhyolitic; eruption may or may not be explosive
andesitic magma
magma that has low viscosity and low silica and gas content; eruption is non-explosive
basaltic magma
volcano formed of volcanic rock and ash; erodes quickly
cinder cone volcano
volcano that is steep and tall; formed of lava and volcanic debris
composite volcano
non-explosive or very mild volcanic eruption
Hawaiian eruption
an active area of volcanoes due to a consistent source of magma in the asthenosphere
hot spot
the most powerful, most explosive volcanic eruption
plinian eruption
volcanic flow that contains a high concentration of gases, ash, and small rocks
pyroclastic flow
magma that has a high viscosity and high silica and gas content; eruption tends to be very explosive
rhyolitic eruption
volcano that has tall, broad slopes; formed by repeated, gradual lava flows
shield volcanoes
an intermittent explosive volcanic eruption
strombolian eruption
ability of a substance to resist flowing
viscosity
the three parts of a volcano:
magma chamber, central vent, crater
the lava least likely to form a pyroclastic flow
basaltic
the height of a volcano determines its explosive power t/f
false
volcanic eruptions occur because of : (3)
magma that needs to be released, plate tectonics, and stress and pressure
The ring of fire is where many volcanoes occur because the ____ plate is subducted in nearly every region
pacific
plinian eruption
rhyolitic
hawaiian eruption
basaltic
strombolian eruption
andesitic
energy produced from the heat of magma and other volcanic materials
geothermal energy
an avalanche of water, mud, and other materials that a volcanic eruption can produce
lahar
volcanic rock and debris that is blasted from a volcano during an eruption
tephra
what state was formed by volcanic explosions?
hawaii
the respiratory system can be injured by inhaling ___
ash
Determine if these are hazardous, beneficial, or both.
pyroclastic flows
h
volcanic ash
hb
geothermal energy
b
lahars
h
lava flows
h
volcanic materials
b
an areas climate can be altered by a volcanic eruption t/f
true
what are lahars?
mud flows
what is tephra?
solid material blasted into the air
volcanic eruptions can ________
help create land
they also form ______
our atmosphere
Volcanic eruptions help make soil _____
fertile
makes useful products like _________
metals, gems, and building supplies
instrument used to measure volcanic gases
correlation spectrometer
gassy smoke released by a volcano
plume
instrument used to measure ground swelling
tiltameter
what kind of volcano is most expected to erupt?
active
how can a scientist predict how explosive a volcano will be?
by studying the composition of the rock
warning signs that a volcano will soon erupt? (3)
earthquakes or tremors, ground swelling, smoke plumes
volcano is emitting gases.
COSPEC
small tremors are occurring.
seismograph
The ground by a volcano is moving upward.
tiltameter
Through monitoring, scientists can predict a volcanic eruption; the problem is that they don't always have the resources to enable them to do so. t/f
true
a large mass of hardened igneous rock beneath all layers of sedimentary rock
batholith
vertical intrusion of magma between rock layers
dike
igneous rock that forms on Earth's surface
extrusive
a volcanic island undersea that has been cut off by wave erosion
guyot
intrusive rock that pushes its way between sedimentary strata in the shape of a dome
laccolith
an underwater volcano
seamount
horizontal intrusion of magma between rock layers
sill
tall feature that forms when the sides of a volcano erode, leaving the rock that filled the central vent of the volcano
volcanic neck
Which intrusive feature may start as a sill but, as more magma builds, push upward like a lens?
laccolith
you can usually tell the difference between calderas and craters by studying ________
a feature's size and formation
If you see a very tall, rock feature that looks like a jagged, rectangular block sticking out of the ground, you're probably observing a _____.
volcanic neck
what is the ring of fire?
a ring of volcanoes around the pacific