volcano and eq Flashcards
fault
i
ring of fire
.
transform/ strike-slip
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divergent / normal
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convergent / reverse
.
P-waves
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S-waves
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epicenter
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focus
.
Richter scale
.
explosive volcano
Volcanic eruptions can be explosive, sending ash, gas and magma high up into the atmosphere
nonexplosive volcano
Because the composition of magma is different in different volcanoes, the properties of the lava are different. In effusive eruptions, lava flows are relatively calm and do not explode out of the volcano
Krakatoa
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
Yellowstone supervolcano
A large volcano in Yellow Stone National Park
San Andreas fault
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
Mid-oceanic ridge
an underwater mountain system formed by plate tectonics. It consists of various mountains linked in chains, typically having a valley known as a rift running along its spine
shield volcano
a type of volcano usually built almost entirely of fluid lava flows. They are named for their low profile, resembling a warrior’s shield lying on the ground
cinder cone volcano
a steep conical hill of loose pyroclastic fragments, such as either volcanic clinkers, cinders, volcanic ash, or scoria that has been built around a volcanic vent
composite volcano
a conical volcano built up by many layers of hardened lava, tephra, pumice, and volcanic ash
hot spot
a portion of the Earth’s surface which experiences volcanism
