earths layers
this is earths outermost and thinnest layer where we live.
the crust
: The type of crust found beneath the oceans.
Oceanic crust
Earth’s crust plus the uppermost mantle form this rigid layer
The lithosphere
Boundary where plates slide past each other.
Transform boundary
When oceanic crust sinks beneath continental crust.
Ocean–continent subduction zone
Q: This layer lies below the crust and makes up most of Earth’s volume
the mantle
Q: The type of crust that forms the continents
Continental crust
The lithosphere is broken into many pieces called these.
Tectonic plates
Boundary where plates move toward each other.
Convergent boundary
Feature formed where a plate bends downward at a subduction zone.
Deep-sea trench
Q: Earth’s center layer made mostly of iron and metal
the core
Compared to continental crust, oceanic crust is thinner and made of this dense rock.
basalt
The soft, slowly flowing layer beneath the lithosphere.
asthenosphere
Boundary where plates move away from each other
Divergent boundary
A chain of volcanoes on land formed by subduction
Volcanic arc
: The liquid metal layer directly beneath the mantle.
the outer core
Q: Compared to oceanic crust, continental crust is thicker and made of this less-dense rock
Granite
because lithosphere rock is rigid, it can do these two things but not flow.
Bend or break
A divergent boundary creates this type of crust.
New oceanic crust
A chain of volcanic islands formed when two oceanic plates converge.
Volcanic island arc
Q: Earth’s hottest layer, solid due to extreme pressure
the inner core
Which crust type is denser: oceanic or continental?
Oceanic crust
he asthenosphere is made of hotter rock from this Earth layer.
The mantle
Underwater mountain chains formed at divergent boundaries
Mid-ocean ridges
When two continental plates collide and form mountains
Continent–continent collision