Earthquakes occur along fault lines where the earth's crust has cracked, forming weak spots. There are two main types of earthquakes - tectonic earthquakes caused by movement of tectonic plates, and volcanic earthquakes caused by volcanic activity. Faults are classified based on the movement under the crust, such as dip-slip, strike-slip, and oblique-slip faults. Active faults are those likely to produce future earthquakes, as movement has occurred within the past 10,000 years, such as the Philippine West Valley Fault Line and Philippine Fault.

1. Ann Marris Montessori School By: Sir Nolie
ault

6. Earthquake
-is a natural phenomenon that happens
deep within the earth, which also known as
-seism
-temblor
-tremor
-Happens and experience it more in
countries are located along the Ring
of Fire
Can never be
PREDICTED!

8. Ayyyy!
Nakaka SAD!
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9. There are two types of earthquake
-Tectonic earthquake- are caused by the
movement of the crustal or tectonic plates
-Volcanic earthquake- caused by volcanic activity
* Earthquakes occur in areas where the
earth’s crust has cracked and produce weak
spot called FAULT LINE.

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12. Convection- the total rising and sinking
of the molten rocks in the mantle
-a fracture in the crust of a planet or
moon accompanied by a displacement
of one side of the fracture with respect
to the outer usually in a direction
parallel to the fracture

13. Depending on the movement under the crust
faults are classified into different kinds.
FAULT
Dip- slip Strike-slip Oblique -Slip
Normal
Reverse
Right-lateral Left-lateral

14. Active and Inactive Fault
-An active fault is likely to cause another
earthquake sometime in the future.
--faults are considered to be active if they have
moved one or more times in at least 10,000
years.
* Example is the Philippine West Valley
Fault Line System and the Philippine Fault