Earthquake Safety

1
Earthquake Safety

• Chapter 6 Section 4

2
How Earthquakes Cause Damage

• Shaking
• Avalanches, landslides
• Destroy buildings, bridges, utility poles, gas
  lines, water mains
• The severity of the shaking is determined by the
  soil.

3
How Earthquakes Cause Damage

• Liquefaction
• Violent shaking turns loose soft soil into mud
• Ground that gives way can cause buildings to sink
  and pull apart

4
How Earthquakes Cause Damage

• Aftershocks
• Can topple weakened buildings
• Can occur hours, days or weeks later

5
How Earthquakes Cause Damage

• Tsunami
• Ocean floor that pushes on water can form a giant
  wave that moves out from the epicenter

6
Earthquake safety

• Drop, cover and hold
• Indoors
• Get under sturdy table or desk
• Crouch near an inner wall
• Cover your head and neck
• Avoid windows, mirrors, things that can topple
• prepare an earthquake kit
• (ahead of time)

7
Earthquake safety

• Outdoors
• Get to an open area away from power lines and
  trees
• Sit

8
Safer Buildings

• Seismic Safe
• Anchor bridges and buildings to solid ground
• Base isolated buildings reduce energy that
  reaches structure (rubber pads, springs)

9
Safer Utilities

• Flexible joints in gas and water lines
• Automatic shut off valves

10
(No Transcript)
11
(No Transcript)
12
(No Transcript)
13
(No Transcript)