Geography natural hazards Flashcards
Name earthquake 2 and its consequences
The Gorkha earthquake, Nepal 2015
8000 dead
5 billion dollars in damage
3 million left homeless
26 hospitals destroyed
Name earthquake 1 and its consequences
Kaikoura earthquake, New Zealand 2016
5m tsunami
50 injured
8.5 billion dollars in damage
Name the 4 plate margins and how each one works and the effects, give examples for each
At a constructive plate margin the plates are moving away from each other, Iceland
Causes shield volcanoes
Hot magma rises to surface where plates pull apart
Mid oceanic ridge “rift valley”
At a destructive plate boundary a continental and oceanic plate boundary are moving towards eachother, Japan
The denser oceanic plate subjects underneath
Grinding plates release pressure causing earthquakes
As plate is subducting magma is forced out
Composite volcanoes
Earthquakes and volcanoes are more destructive
At a collision plate boundary two continental plates are moving towards each other, Himalayas
Plates begin to fold, uplift and fault
Fold mountains
Severe earthquakes
No volcanoes as magma cannot reach surface
At conservative plate boundary two plates are going past each other at different speeds
Friction builds up pressure which causes an earthquake when released
San Andreas fault in San Fransisco
No volcanoes
