Earthquake - definition
Sudden shaking of the earth caused by movement of earth’s crust
Seismologist - definition
Scientists that study earthquakes
Focus - definition
Place where earthquake begins beneath surface
Seismic waves - definition
Shock waves that spread out in circles from focus
Epicenter - definition
Point of earths surface directly above fous where earthquake is strongest
Fault - definition
Large crack in earths crust
How do earthquakes occur
When two plates collide, separate or slide past each other, their edges lock together. Pressure builds, one edge snaps/jolts forward. Shock waves released, causing earth to tremble
Tsunami - definition
Huge waves moves quickly towards shore triggered by under sea earthquake
How does a tsunami happen
Under sea earthquake disturbs seabed. Causes powerful waves to move out all directions
Sea waves much higher as approach shallow water near coast (30 meters as the crash onto shore)
Devastates low lying coastal areas
Seismograph - definition
Instrument measures and record earthquake and long it lasted
Magnitude - definition
Strength of earthquake
Nepal earthquake - date
25 April 2015
Nepal earthquake - magnitude
7.8 mms
Nepal earthquake - Location
80km from capital, Kathmandu
Nepal earthquake - depth
15km below ground
Nepal earthquake - aftershocks
2 within hour: 6.6 and 6.7 mms
Nepal earthquake - social impacts
9000 dead, 17000 injured
Mount Everest avalanche, 19 dead
90% clinic and schools some areas unusable
Nepal earthquake - economic impacts
Damages €9 billion
1 million children with no school
3.7 million needing emergency aid (food, tents, water, medical supplies)
Nepal’s development
146th out of 193 on HDI (0.601)