2. SO WHAT IS EARTHQUAKE?
Is the shaking of the surface of the Earth resulting
from a sudden release of energy in the Earth’s
lithosphere that creates seismic waves.
3. WHERE DO EARTHQUAKES HAPPEN AND WHY?
• Earthquakes occur along a fault, or locations where two or more tectonic plates meet.
These tectonic plates put pressure on one another as they move toward each other.
When the pressure becomes too much and causes the plate to slip, earthquakes occur
4. CAUSES OF EARTHQUAKES IN GENERAL
Induced quakes are caused by human activity, like tunnel construction, filling reservoirs and
implementing geothermal or fracking projects.Volcanic Earthquakes. Volcanic quakes are
associated with active volcanism Collapse Earthquakes.
5. THREE TYPES OF PLATE BOUNDARIES
— Divergent
— Convergent
— Transform
6. DIVERGENT BOUNDARY
A divergent boundary occurs when two tectonic plates
move away from each other. Along these boundaries,
earthquakes are common and magma (molten rock)
rises from the Earth’s mantle to the surface, solidifying
to create new oceanic crust. The Mid-Atlantic Ridge is
an example of divergent plate boundaries.
7. CONVERGENT BOUNDARY
Is an area on Earth where two or more lithospheric
plates collide. One plate eventually slides beneath
the other, a process known as subduction.
8. TRANSFORM BOUNDARY
A transform fault or transform boundary, is a fault along a plate
boundary where the motion is predominantly horizontal. It ends
abruptly where it connects to another plate boundary, either another
transform, a spreading ridge, or a subduction zone
9. 1960 VALDIVIA EARTHQUAKE
The 1960 Valdivia earthquake and tsunami (Spanish: Terremoto de Valdivia) or the
Great Chilean earthquake (Gran terremoto de Chile) on 22 May 1960 was the most
powerful earthquake ever recorded. Various studies have placed it at 9.4–9.6 on the
moment magnitude scale.
10. HERE’S THE EXACT DETAILS OF 1960 VALDIVIA
EARTHQUAKE
Number of deaths: 1,655
Location: Chile
Start date: May 22, 1960
Magnitude: 9.4–9.6 '"`UNIQ--
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Tsunami: Up to 25 m (82 ft)
Depth: 33 km (21 mi)
Casualties: 1,000–6,000
11. THREE KINDS OF EARTHQUAKES
— Shallow fault earthquakes
— Subduction zone earthquakes
— Deep earthquakes
15. WHAT TO DO WHEN THERE’S EARTHQUAKE
Drop Cover Hold on
DROP down onto your hands and knees before the earthquake knocks you down
COVER your head and neck (and your entire body if possible) underneath a sturdy
table or desk
HOLD ON to your shelter (or to your head and neck) until the shaking stops
16. WHAT TO DO AFTER AN EARTHQUAKE
• Check yourself and others for injuries
• Check water, gas, and electric lines for damage
• Turn on the radio
• Stay out of damaged buildings
• Be careful around broken glass and debris
• Stay away from beaches
• Stay away from damaged areas
