Various Hazards that May happen in the event of Earthquake Reference: https://www.gns.cri.nz/Home/Learning/Science-Topics/Earthquakes/Earthquake-Hazards

1. VARIOUS HAZARDS THAT MAY HAPPEN IN
THE EVENT OF EARTHQUAKE
PREPARED BY: LOVELY S. DELA CRUZ, SST-1

2. WHAT IS EARTHQUAKE?
A sudden and violent shaking of the
ground, sometimes causing great
destruction.

3. WHY DO EARTHQUAKE OCCURS?
A Sudden release of
seismic waves make the
ground shake.
Caused when rock
underground suddenly
breaks along a fault.

4. Various hazards that may happen in the event of earthquake
The type of hazard depends on the strength of seis
mic activity, along with such factors as local topogr
aphic and built features, subsurface geology and
groundwater.
A large earthquake will always be followed by a se
quence of aftershocks.

5. GROUND SHAKING
If an earthquake generates a
large enough shaking intensity,
structures like buildings, bridges
and dams can be severely
damaged, and cliffs and sloping
ground destabilized.

6. LANDSLIDES AND ROCKFALLS
Ground shaking due to
earthquakes destabilizes cliffs
and steep slopes, causing
landslides and rockfalls as a
significant side-effect. Heavy
rain and unconsolidated or
fractured rock are exacerbating
factors.

7. LIQUEFICATION
 Liquefication occurs when
waterlogged sediments are agitated
by seismic shaking. This separates
the grains from each other, reducing
their load bearing capacity.
 When the vibrations stop the
sediments settle down again,
squeezing groundwater out of
fissures and holes in the ground to
cause flooding.

8. TSUNAMI
Tsunamis are long wavelength
oceanic waves generated by
the sudden displacement of
seawater by a shallow
earthquake, volcanic eruption
or submarine landslide.

12. WHEN TO DO IT?

13. Stay away from
damaged Areas.

14. Stay away from
damaged Areas.

15. Learn First Aid.

16. Learn First Aid.

17. If you are outside, stay
in an open area away
from power lines.

18. If you are outside, stay
in an open area away
from power lines.

19. Be careful around
broke glasses and
debris.

20. Be careful around
broke glasses and
debris.

21. Learn the earthquake
plan at your school or
at home.

22. Learn the earthquake
plan at your school or
at home.

23. Stay away from
beaches. Tsunamis hit
after the ground has
stopped shaking.

24. Stay away from
beaches. Tsunamis hit
after the ground has
stopped shaking.

25. Stay Calm!

26. Stay Calm!

27. Provide first aid
for anyone who
needs it.

28. Provide first aid
for anyone who
needs it.

29. Don’t leave
heavy objects on
shelves.

30. Don’t leave
heavy objects on
shelves.

31. Stay away from
windows and
outside doors.

32. Stay away from
windows and
outside doors.

33. Expect
aftershocks.

34. Expect
aftershocks.

35. THANK YOU FOR LISTENING!