Earthquakes

Question 1

What is a Earthquake?

Answer 1

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

Question 2

Elastic Rebound Theory

Answer 2

• 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

Question 3

What are Seismic Waves?

Answer 3

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

Question 4

The cause of an earthquake in Japan

Answer 4

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

Question 5

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

Answer 5

• 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.

Question 6

Impacts on Earthquakes

Answer 6

• 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.