v Flashcards
(20 cards)
ring of fire
a path along the Pacific Ocean characterized by active volcanoes and frequent earthquakes.
Strike-slip fault
a fault on which the two blocks slide past one another.
Normal fault
Causes the hanging wall to move down relative to the foot wall.
. Reverse fault
When rocks are pushed together by compression
P-waves
waves that cause particles of rock to move in a back and forth direction.
S-waves
A seismic wave that causes particles of rock to move in a side to side direction.
epicenter
The point on Earth´s surface directly above an earthquake starting point or focus.
focus
Point along a fault at which the first motion of and earthquake occurs.
Richter magnitude scale
Measures strengths of earthquakes.
explosive volcano
Rare, incredibly destructive
nonexplosive volcano
most type of eruption relatively calm. flows lava
Krakatoa
Is a caldera in the sunda strait between the islands of Java and Sumatra in the Indonesian province of Lampung.
Yellowstone supervolcano
Is a volcanic caldera
. San Andreas fault
Is a continental transform fault that extends roughly 1,200 Kilometers through CA
Mid-oceanic ridge
A seafloor mountain system formed by plate tectonics.
shield volcano
Low profile. It resembles a warriors shield lying on the ground
cinder cone volcano
Made up of pyroclastic material usually produced from moderately explosive eruptions.
composite volcano
Most common type of Volcano. They form an explosive eruptions of pyroclastic material material followed by quieter flows of lava.
. hot spot
A volcanically active area of Earthś surface far from a tectonic plate boundary.
Mt. Vesuvius
