Natural Hazards Keywords Flashcards
Secondary effects
Those that result from primary effects
Primary effects
Those resulting directly from the event itself
Tsunamis
Large ocean waves caused by underwater earthquakes
Richter scale
A measure of earthquake strength
Aftershocks
Smaller tremors occurring after an earthquake
Earth’s crust
The solid outer layer of the earth
Tectonic plates
Large segments of the earth’s crust
Mantle
The layer of the earth between the crust and the core
Magma
Liquid rock below the earth’s surface
Liquefaction
The loss of strength that can occur in the ground during an earthquake
Seismic activity
Movements in the earth’s crust
Laser ranging
Using laser beams and mirrors to detect minute changes in the shape of the land
Evacuation
Movement of people away from a place of danger to a place of safety
Storm surges
Abnormal rise of the sea along a shore as the result of a storm, sometimes called a tidal surge
Tropical
Situated in the area between the tropics of Cancer and Capricorn