earth quakes

• what is a scientist who study's earthquakes called

  seismologist
• what is the focus


  the place where an earthquake begins beneath the the earths surface
• what are shock waves 


  they spread out in circles from the focus
• what is an epicentre


  the point on the earth surface directly above the focus of the earthquake
• what is a fault

  a large crack in the earths crust
• were is the san andreas fault 


  california
• what are some ways of trying to reduce the damage if an earthquake 


  •predicting when an earth quake might occur

  •planning for earthquakes

  • construct earthquake safe buildings
• Computer-controlled weights on roof

  • Reduce movement
• Steel frames


  • Can sway during earth movements
• Automatic window shutters


  • Prevent falling glass
• Open areas


  • Where people can assemble if evacuated
• Outer panels


  • Flexibly attached to steel structure
• Roads


  • Provide quick access for emergency services
• Foundation


  • Sunk into bedrock, avoiding clay
• Rubber shock-absorbers


  • Absorb earth tremors