Earthquake/volcano Flashcards
an extended break in a body of rock, marked by the relative displacement and discontinuity of strata on either side of a particular surface.
fault
The Ring of Fire is a major area in the basin of the Pacific Ocean where a large number of earthquakes and volcanic eruptions occur.
ring of fire
Two tectonic plates slip by each other horizontally
transform / strike-slip
Two tectonic plates pull apart
divergent / normal
Two tectonic plates come together
convergent / reverse
Seismic waves that can pass through liquid
P-waves
Seismic waves that can’t pass though liquid
S-waves
The point on the earth’s surface vertically above the focus of an earthquake.
epicenter
the point of origin of an earthquake.
focus
a numerical scale for expressing the magnitude of an earthquake on the basis of seismograph oscillations
Richter scale
Volcanic eruptions can be explosive, sending ash, gas and magma high up into the atmosphere
explosive volcano
In effusive eruptions, lava flows are relatively calm and do not explode out of the volcano.
nonexplosive volcano
Krakatoa, or Krakatau, is a volcanic island situated in the Sunda Strait between the islands of Java and Sumatra in the Indonesian province of Lampung
Krakatoa
The Yellowstone Caldera is a volcanic caldera and supervolcano in Yellowstone National Park in the Western United States, sometimes referred to as the Yellowstone Supervolcano.
Yellowstone supervolcano
The San Andreas Fault is a continental transform fault that extends roughly 1,200 kilometers through California. It forms the tectonic boundary between the Pacific Plate and the North American Plate, and its motion is right-lateral strike-slip
San Andreas fault
