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EngHum revision Volcanoes & Earthquakes, credits by Quinn Cai® any…
EngHum revision Volcanoes & Earthquakes
Earth inner structure
mantle
aesthenosphere
upper mantle
middle mantle
lower mantle
core
outer core
inner core
crust
oceanic crust
continental crust
lithosphere
Volcanoes & Earthquakes
Formation
plate tectonics activity
plate boundaries
convergent
oceanic-continental
e.g. Pacific and Eurasian
constructive
any occasion suffices
e.g. Iceland
conservative
any occasion suffices whether the 2 plates slide past is the key point
North American and Pacific
collision
continental-continental
e.g. Indo-Australian and Eurasian
crusts
oceanic
denser
subducts into subduction zone
continental
floats above oceanic plates
Volcanoes
Formation
constructive
creates shield volcanoes
shield volcano
convergent
creates every other type(cinder cone, composite)
Earthquakes
Formation
Conservative
2 plates slide past each other and creates Earthquakes
Collision
creates fold mountains thus creates earthquakes
Measurement
Richter scale
measures seismic waves in the epicenter
analyze data and give a level of intensity on a seismographs e.g. magnitude 7
Continental Drift Theory
Developed by Alfred Wegner
Definition:
The theory that mainly explains why there are identical shapes of certain continents. Mainly focuses on the drift of crust.
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