Structure of the Earth Flashcards
what is the furthest down you can go in the earth’s structure?
inner core
what comes after the inner core?
outer core
what comes after the outer core?
lower mantle
what comes after the lower mantle?
upper mantle
what is the thin crust called in the upper mantle?
oceanic crust
what is the thick crust called in the upper mantle?
continental crust
which layer of the Earth has a partially molten layer?
athenopshere
why does the earth’s core give out heat?
radioactive decay
what does the earth’s density do from crust to core?
increases
what does the earth’s temp do from crust to core?
increases
what forms when two tectonic plates push together?
a trench
what is a plate boundary?
a place where two plates meet
what happens on a convergent plate boundary?
the plates push together
what happens on a divergent plate boundary?
the plates pull apart
what happens on a conservative plate boundary?
the plates slide past each other
what is the nickname for a divergent plate boundary?
construcitve
what is the nickname for a convergent (oceanic meets continental) plate boundary?
destructive
what is the nickname for a convergent (continental meets continental) plate boundary?
collision
what is the nickname for a conservative plate boundary?
transform
what type of volcano forms on a divergent plate boundary?
shield volcano
what is the Benioff Zone?
lots of friction and pressure which release seismic waves and cause earthquakes
on which plate boundary do fold mountains form?
convergent (continental meets continental)
which plate boundary creates the most violent earthquakes?
conservative
which plate boundary produces very explosive volcanoes?
convergent (oceanic meets continental)
which plate boundary forms a deep ocean trench?
convergent (oceanic meets continental)
what is a hotspot volcano?
a volcano that forms in the centre of a plate
what is the crust in the solid part of the upper mantle called?
lithosphere