Superman
a terrible, sudden event
What is a catastrophe?
to move forward quickly, suddenly, and with force
What is a surge?
thick or heavy
What is dense?
a crack in Earth's crust
What is a fault?
an earthquake's strength
What is magnitude?
a scientist who studies the makeup of the earth and the forces and processes that shape and change it
What is a geologist?
a surge of energy traveling out from an earthquake's source through the earth
What is seismic wave?
a theory that Earth's crust and the solid top part of the mantle are broken up into sections that fit together but move against each other
What are plate tectonics?
a smaller, weaker earthquake that often follows a main earthquake event
What is aftershock?
a gigantic wave of seawater caused by an earthquake in oceanic crust
What is a tsunami?
a process in which continents slowly move over time on the surface of the earth
What is continental drift?