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Earthquakes - Coggle Diagram
Earthquakes
Formation
Focus
Where the Earthquakes begins Under the Crust
Shockwaves
Seismic waves
Spread out in circles from focus
Epicentre
On the Crust directly above the focus
Earthquake is most powerful here
Fault
Crack where plates get stuck
Energy Builds up between them
Measuring Earthquakes
Seismograph
Measures Earthquakes and how long they last
Richter Scale
Original scale to measure Magnitude
Goes from 1 to 8
Unreliable for bigger Earthquakes
Moment Magnitude scale
Currently used to measure magnitude
Replaced Richter Scale
Goes from 1 to 10
Modified Mercalli scale
Based on eyewitness accounts
Distribution
Conservative Plate Boundaries
Destructive Plate Boundaries
Tsunami
What its is
Underwater Earthquake
Huge fast moving Tidal wave
Can cause damage and death
Formation
Undersea Earthquake causes powerful waves to form
Waves become higher as they reach the coast
Can devastate coastal areas