L3 - Shaky Ground Flashcards
Why does the ground shake?
Plates try to push past each other, which builds up pressure
What happens when the pressure builds up too much?
That pressure is suddenly released – a release of energy happens along a fault
How does the energy travel?
The energy travels out in all direction as earthquake waves
How is energy measured and what is it measured using?
Measured as magnitude using a seismometer
How do tsunamis travel?
Through a jolt upwards causing a displacement of water travelling in all directions
What affects the size of the tsunami?
The frequency of movement - Long period means pressure builds up, eventual movement will be greater, generating much more energy
Are shallow epicenters weaker than deep ones?
No
Where was the worlds largest earthquake?
Valdivia-Puerto Montt, Chile(1960)
Which coast was the 2011 Japan earthquake on?
Coast of Honshu
Why do waves from a deep earthquake spread quickly?
Deeper rocks are under high pressure and rigid so wave energy can travel from particle to particle fatser
Which countries relied on components from Japan and were affected by the disaster?
Singapore, Thailand and UK
Which power plant had the cooling system stop working as a result of the tsunami?
Fukushima
Which countries benefitted from the damage to Japan’s nuclear industry?
Qatar, UAE and Kuwait
What was the size of the aftershocks that occured?
7.8 on the Richter scale
Which volcano erupted
Shinmoedake Volcano
