shaking things up!
at a convergent boundary plates do what
move towards each other
a deep underwater valley that forms on the oceion side of a subduction zone is a BLANK
TRENCH
What is the point on the surface directly on top the focus
the epicenter
what moves earth tectonic plates
convection currents in the mantle
a BLANK measures and records sesmic waves
SESMOGRAPH
what is above a fault
a hanging wall
why do certain volcanos erupt explosively
thick silica rich magma traps gas until the pressure blasts out
beneath a volcano,magma collects in an underground pocket called BLANK
MAGMA CHAMBER
what is below a fault
a footwall
deep focus earthquakes happen when
deeper 300km
a reverse fault with a slope of 45 degress or less is called a BLANK
THRUST FAULT
why do shallow earthquakes tend to do more damage
because they have less time to weeken as they travel
the tetons and the sierra navada are which type of mountain
fault-block
the BLANK is the point inside earth where an earthquake begins
FOCUS
what is a fault
a fault is a break in the crust where rocks move.