geography terms

aftershock

A smaller earthquake following the main shock of a larger earthquake

crust

The outermost solid layer of the earth

disaster

Earthquake becomes this after significant loss

earthquake

A sudden violent shake of ground causing destruction as a result of movement in earth’s crust

epicentre

Point on surface directly above earthquake’s focus

faults

A fracture in rock formation along there has been movement of the rocks on either side of fracture

focus

Place of origin of an earthquake

hazard

Danger or risk

landslide

Collapse of mass or earth from mountain or cliff

liquefaction

Shaking earth reduces strength of soil forcing liquid to rise to top

magnitude

size of earthquake measure be energy released

plate boundary

where two tectonic plates meet

ring of fire

zone of activity surrounds Pacific Ocean and plate

Richter scale

way to measure earthquakes is logarithmic scale so that a difference of one has a roughly 30-fold different in size

seismograph

instrument that measures earthquake it measures size and duration also known as seismometer

tsunami

long high sea wave that can be caused by earthquakes