• 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

1/32

Click to flip

32 Cards in this Set

  • Front
  • Back
active volcano
A volcano that has erupted within the last 50 years
ash
Glassy volcanic fragments smaller than cinders
bomb
A mass of lava that congeals in midair
caldera
A large depression at the summit of a volcano formed by the explosion or collapse of the crater
cinder cone
a mass of volcanic cinders accumulated in the shape of a cone, especially at a vent of a volcano
cinder
A rough, solidified piece of lava with many small pieces
Circum-Pacific belt
The volcano belt located around the Pacific ocean
composite volcano
A volcano that is built up by a combination of cinders and solid lava
crater
A round depression at the top of a volcanic cone
dormant volcano
A volcano for which there exists a historical record of at least one eruption, but not within the last fifty years
earthquake
The shock waves caused by the collision of sections of the tectonic plates
epicenter
The point from which earthquake waves seem to radiate, situated directly above the focus of an earthquake
extinct volcano
A volcano for which there are no historical records of any eruptions
focus
The real center of an earthquake, generally some distance below the surface
geothermal
Of or having to do with the internal heat of the earth
geyser
A spring that sends a column of hot water and steam into the air at intervals
geyserite
A whitish deposit of silica around the opening of a geyser
hot spring
A natural spring from which heater water issues
lahar
A mudslide caused by water from snow melted during a volcanic eruption
lava
Molten rock flowing from a volcano or fissure in the earth; the rock formed by cooling of this molten rock
L waves
The slow-moving waves caused by an earthquake which travel along the surface; the last waves of an earthquake to arrive at a distant seismic station
magnitude
The measure of the energy of an earthquake
plate tectonics theory
The theory which states that the earth's crust is made of several large, flat pieces
P waves
The primary waves caused by an earthquake which travel rapidly through the earth's interior, including the core. These are the first waves to arrive at a seismic station
Richter scale
An open-ended scale for indicating the magnitude of earthquakes
seismograph
An instrument for detecting and recording earth vibrations
seismologist
A scientist who studies earthquakes
shield volcano
A volcano that is built up from smooth lava flows and is spread out with gently sloping flanks
S waves
The secondary waves caused by an earthquake which travel through the earth's interior, but not the core, and arrive at a distant seismic station after the P waves but before the L waves
tsunami
A seismic sea wave
vent
A cylindrical opening that connects the earth's surface with a source of magma below
volcano
A landform built up by molten rock that has come to the earth's surface through a vent