A
A giant wave caused by an earthquake on the ocean floor.
Tsunamis
the force that pulls rocks apart
tension force
A break in the earth's crust
fault
opening in Earth that erupts gases, ash, and lava
volcano
vibrations produced when rocks break along a fault
earthquake
A small area or region with a relatively hot temperature in comparison to its surroundings.
Hot Spot
A bowl-shaped area that forms around a volcano's central opening.
crater
force that squeezes rocks together
compression
causes rocks on either side of a fault to slide past each other
shear
an area where Earth's plates are moving apart.
divergent boundary
occurs when wet soil acts more like a liquid during an earthquake.
liquefaction
places where Earth's plates move together.
convergent boundary
the opening through which molten rock and gas leave a volcano
vent
measure of the energy released during an earthquake
magnitude
Where is the most active volcano located?
Kilauea, Hawaii
rock above the fault surface moves downward in relation to rock below the fault surface
normal fault
the rocks on either side of the fault-slip past each other sideways, with little up or down motion.
strike-slip fault
surface is forced up and over the rock below the fault surface.
reverse fault