plate tectonics

pyroclastic debris

debris from volcanic eruption

epicenter

Location above focus

three types of volcanoes

shield, cinder cone, composite

Pyroclastic flow

hot gas & tephra

tephra

fragments made from volcanic erruptions

lahars

volcanic mudflows made of water, debris & volcanic ash

focus

source/start of the earthquake

ring of fire

curcum-pacific seismic belt

vents

opening in earth’s surface through where a volcanic erruptuon takes place

erruptions

when anything is ejected from volcano’s vent

lava

magma @ the earths surface

magma

molten rock

asthenoshpere

semi liquid layer of the earth, like a convection oven

convergent boundary

plates pulled towards each other

divergent boundary

tectonic plates pushed apart

transform boundary

plates move in opposite directions laterally/horizontally

subduction zone

plate going under another

core

deepest part of the earth, made of iron & nickel

lithosphere

solid outer part kd the earth

mantle

layer between the crust & core

pangea

super continent

why do the plates move?

they float on the asthenosphere which pushes them around like boats