2.1
These are the 3 major layers of the earth:
crust, mantle, core
This the study of earthquakes
seismology
The study of volcanoes
volcanology
The name of the land mass before the separation of the continents.
Pangea
These are giant sea waves
tsunamis
molten rock
magma
This is a boundary between stationary rocks and moving rocks:
fault
The point at which an earthquake begins
focus
More than half of the worlds volcanoes are in this belt
ring of fire
This is the study of earth
geology
An instrument that measures earthquakes:
seismograph
molten rock that flows out of a volcano
lava
Deposits of sand, mineral fragments and organic material left by wind and water:
sediments
The most reliable method of measuring an earthquakes magnitude:
the moment magnitude scale
any substance emitted by a volcano:
ejecta