Vocabulary/Definitions
bore: The violently churning front edge of a tsunami.
buoy: A float moored in water to mark a location, warn of danger, indicate a navigational channel or signal information.
detect: To discover the existence, presence or fact of.
energy: The capacity for work or vigorous activity; power.
pyroclastic flow: A hot, dry, fast-moving, and high-density mixture of ash, pumice, rock fragments, and gas that formed during explosive eruptions or from the collapse of a lava dome.
sea floor: (or ocean floor) The bottom of a sea or ocean.
sensor: A device that receives and responds to a signal or stimulus.
tectonic plate: A piece of the Earth's crust that slides over the molten rock of the mantle. As the plates rub against each other earthquakes result that potentially cause tsunamis.
tsunami: A large sea wave of local or distant origin that results from large-scale sea floor displacements associated with large earthquakes, major submarine slides or exploding volcanic islands.
wave: The up and down movement of water.