plates
what plates float on
the mantle
lava underground
magma
earthquakes typically happen along these
fault line
map of elevation
topography
the longest unit of geologic time
eon
type of divergent boundary at the bottom of the ocean
seafloor spreading
fast moving clouds of hot gas from volcanoes
pyroclastic flow
the vibrations that earthquakes create
seismic waves
word that means mountain formation
orogeny
shortest unit of geologic time
epoch
when plates come together
convergent boundary
rock made from volcanic activity
igneous
the point in the crust that the earthquake originates
focus
a flat top mountain
plateau
era of developing sea life
paleozoic
when plates slide horizontally past each other
transform boundary
long cracks in the earth that lava can flow out of
fissures
the point on the surface that is directly above the earthquakes origin
epicenter
when a mountain rises as it erodes
isostatic rebound
era of dinosoars
mesozoic
when plates are pulled back into the mantle
subduction
volcanic crater
caldera
underwater earthquake
tsunami
mountains formed by divergent stretching boundaries
fault-block mountain
period of the paleozoic where life diversified quickly
cambrian