Earthquake/valcano Flashcards
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- nonexplosive volcano
- Krakatoa
- Yellowstone supervolcano
- San Andreas fault
- Mid-oceanic ridge
- shield volcano
- cinder cone volcano
- composite volcano
- hot spot
- Mt. Vesuvius
ring of fire
a path along the Pacific Ocean characterized by active volcanoes and frequent earthquakes
Strike-slip fault
a fault in which rock strata are displaced mainly in a horizontal direction, parallel to the line of the fault.
Normal fault
a dip-slip fault in which the block above the fault has moved downward relative to the block below.
Reverse fault
a geological fault in which the hanging wall appears to have been pushed up along the footwall.
P-waves
two main types of elastic body waves, called seismic waves in seismology.
S-waves
secondary waves, or shear waves are a type of elastic wave and are one of the two main types of elastic body waves
epicenter
the point on the earth’s surface vertically above the focus of an earthquake.
focus
the place inside Earth’s crust where an earthquake originates.
Richter magnitude scale
assigns a number to quantify the amount of seismic energy released by an earthquake.
explosive volcano
a volcanic eruption of the most violent type.
nonexplosive volcano
the most common type of volcanic eruptions. covered with lava form nonexplosive eruptions.
Krakatoa
a caldera in the Sunda Strait between the islands of Java and Sumatra in the Indonesian province of Lampung.
Yellowstone supervolcano
a volcano that has had an eruption with a Volcanic Explosivity Index of 8, the largest recorded value on the index.
San Andreas fault
a continental transform fault that extends roughly 1,200 kilometers through California
