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!
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.
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