Natural disasters earthquake

1. Natural Disasters
Earthquakes

2. The preparedness of the community for a
natural disaster
Efforts of community during a natural
disaster
After the natural disaster
Role of youth after a natural disaster

3. PlanetEarth’sheatflowcausesmovementof
lithosphericplates,whichcausesfaulting,
which
causesearthquakes.Earthquakesoften
occurwhentectonicplatecollide.
What is an earthquake ?

4. What happens when plates collide? It
depends how the plates are moving when
they meet:
1.Whentwoplatescollidehead-on,they
pusheachotherupandformmountains.
That'showtheHimalayasandothergreat
mountainrangeswerecreated.

5. 2.Whenoneplatedivesbelowanother
plate,itcreatesaseductionzoneasthe
divingplateiscrushedandmelted.This
processoftencreatesvolcanoesasthe
magmarisesuptothesurface.

6. 3.Whentwoplatesslidepasteachother,
theycreateatransformfault,liketheSan
Andreasfault.

7. Earthquake is an event which
is –
-generally unpredictable
-happens instantly or without giving enough time to
react
-affecting a large number of people
-disrupting normal life and leading to a large scale
devastation in terms of loss of life and property
-always finding the administration and affected
people struggling to respond in the desired
manner
-leaving deep socio-psychological,
political and economic after effects
which persist for a long time to come.

8. Aftershock
An earthquake of similar or lesser intensity that follows the
main earthquake.
Magnitude
The amount of energy released
during an earthquake, which
is computed from an amplitude
of seismic waves. A magnitude
of 7.0 on the Richter Scale
indicates an extremely strong
earthquake.

9. Emergency Response
Post-disaster: recovery
Preparedness
Prevention/
Mitigation
Reconstruction
Rehabilitation
Response/Relief
Pre-disaster: risk reduction
Disaster
Emergency Response
Post-disaster: recovery
Preparedness
Prevention/
Mitigation
Reconstruction
Rehabilitation
Response/Relief
Pre-disaster: risk reduction
Disaster Parts of earthquake
management:

10. Before an earthquake:
Prepareadisasterpreparednesskit.
Haveanemergencyevacuationplan.
Anchorheavyobjectsandpotentialfalling
hazards.(bookcases,wallunits,etc.)
Knowemergencytelephonenumbers.

11. During an earthquake:
Staycalm.
Ifinside:standinadoorwayorcrouch
besideadeskortable.
Ifoutside:standawayfrombuildings,trees,
telephone,andelectricallines.
Ifontheroad:driveawayfromunderpasses
andoverpasses;stopinasafearea,stayin
between vehiclesorbetween sturdy
furniture.

12. After an earthquake:
Checkforinjuriesandprovidefirstaid.
Doasafetycheck:checkforgas,water,
downedpowerlinesandshortages.
Turnoffappropriateutilities;Checkfor
damage.
Turnontheradioandlistenforinstructions
onsafetyorrecoveryactions.
Usethetelephoneforemergenciesonly.

13. Earthquakewavesareknownasseismic
waves.Therearethree
maintypesofseismic
waves.Eachtypeof
wavehasaspeed
andmanneroftravel.
Seismicwaves

14. Thisisanimageofaseismograph,
aninstrumentusedtorecordthe
energyreleasedbyanearthquake.
Whentheneedleismovedbythe
motionoftheearth,itleavesa
wavyline.

15. Blueprimarywavesfollowedbyredsecondary
wavesmoveoutwardinconcentriccircles
fromtheepicenterofanearthquakeoff
BritishColumbiaandWashingtonState.

16. Made By:-
Kabi
r
Hars
hit
Kam
al
Hem

17. Thank You