Impacts of Seismic Events (AQA A-Level Geography): Flashcards
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Practise the cards
10 cards from this deck
Primary effects of earthquakes
Primary effects of earthquakes
Immediate consequences of ground shaking during earthquake
Modified Mercalli scale purpose
Modified Mercalli scale purpose
Assesses earthquake intensity based on observed damage
Ground rupture definition
Ground rupture definition
Visible breaking & displacement of Earth's surface along fault
Soil liquefaction
Soil liquefaction
Waterlogged soils lose strength & behave like fluid when shaken
Tsunami speed in deep water
Tsunami speed in deep water
Over 700 km per hour
First sign of approaching tsunami
First sign of approaching tsunami
Drawdown - sea recedes dramatically from shore
Percentage of tsunamis in Pacific Basin
Percentage of tsunamis in Pacific Basin
Around 90%
Earthquake preparedness mantra
Earthquake preparedness mantra
Drop, cover, and hold on
Earthquake prediction accuracy
Earthquake prediction accuracy
Extremely difficult; predicting even hours before unrealistic
Typical tsunami impact zone distance inland
Typical tsunami impact zone distance inland
At least 500-600 metres inland