geography natural hazards
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7 Terms
what is a natural hazard
a natural event that threatens people, property and the environment
what is the difference between a hazard, and a disaster?
hazard: a potential threat, a disaster happens when it causes major damage or loss of life.
what causes earthquakes?
movement of tectonic plates along faults in the earths crust.
what scale measures earthquake magnitude?
the Richter scale or moment magnitude scale ( Mw )
what is the point inside the earth where an earthquake begins
the focus ( or hypocenter )
what is the point directly above the focus on the earths surface
the epicenter
what causes volcanic eruptions?
pressure from rising magma and gases beneath the earths crust