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Earthquakes Flashcards

(6 cards)

1
Q

What is a Earthquake?

A

The shaking or trembling caused by the sudden release of energy, faulting of rocks.

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2
Q

Elastic Rebound Theory

A
  • Rocks bend until the strength of the rock is exceeded.
    • Rupture occurs and the rocks quickly rebound to an undeformed shape.
    • Energy is released in waves that radiate outward from the fault
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3
Q

What are Seismic Waves?

A

Response of material to the arrival of energy fronts released by rupture.

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4
Q

The cause of an earthquake in Japan

A

Japan gets lots of earthquakes because it lies between 3 crustal plates - the Eurasian plate, Philippine plate and Pacific plate.

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5
Q

5 Impacts that the shaking had on people and the landscape in Japan?

A
  • Houses and buildings have collapsed.
    • Mud spirts up making it hard to get past.
    • People being trapped.
    • Tsunami starts to arrive.
    • Cars, buildings are being washed away.
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6
Q

Impacts on Earthquakes

A
  • A 20km exclusion zone was setup around Fukushima Nuclear Power Plant.
    • Japan has invested in earthquake proof building that sway instead of shake.
    • People were given education about evacuation.
    • They have an early warning system, bouys in the Pacific Ocean and use of satalites for tsunamis allowing time for evacuation.
    • Tsunami walls were put in place to stop the water from going and flooding the village.
    • Children in Japanese schools learn about what they have to do in an earthquake.
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