a grade 8 topic for second quarter week 6

2. -a violent shaking of the
Earth's surface.

3. Earthquake-releases energy in waves that
travel's through the Earth's Crust.
There are 3 main reasons that cause an
Earthquake,
Movement Of Tectonic Plates
Volcanic Eruption
Induced Quaking

4. Movement of tectonic plates
•Tectonic Plates-are Large Slab's of rock
that divides the Earth's crust

6. Focus (hypocenter)-
This is the actual location where
the fault movement begins. It is
located at the depth.

7. •Epicenter-This is the point located
on the surface.
•Fault-Layers of rocks that slide or
pass over one another structure.

8. Earthquake Is caused By Volcanic Eruption
through vibration generated by the movement of
magma or other fluid within the volcano.
Mount Tambora-Largest/Strongest record of
earthquake due to volcanic eruption.

9. Induced Quaking
(Seismic Quaking)-
is caused by human activities Examples of Human
Activities that, cause an earthquake,
Industrial Process
Mining
Construction
Underground Explosions

10. Magnitude and intensity of
earthquake
Seismology-The Study Of Earthquakes
Seismologist-measure the strength and size of
an earthquake by means such as Intensity and
Magnitude.

11. Magnitude
A total energy released during an
earthquake. It is used by Richer
Scale.

12. Intensity
gives the amount of shaking experience
or the degree of damage it caused to
the area. Deadliest Recorded
Earthquake's In The Philippines

13. 3. Nueva Ecija Earthquake
Magnitude: 7.5
Date: Nov 30,1645
 Epicenter: Nueva Ecija
Damage's: Over a Hundred Building's and House's
were destroyed

15. •2.Luzon Earthquake Magnitude: 7.8
•Date: July 16,1990 at 4:26Pm
•Epicentre: Rizal and Nueva Ecija
•Damage: 1621 Deaths

17. 1.Moro Gulf Earthquake and Tsunami Magnitude: 8.0
 Date: August,16,1976
 Epicentre: Celebes Sea
Damage: up to 8000 Deaths

19. The Great Chilean Earthquake-
The Strongest Earthquake ever Recorded.
 It hit Valdivia Town in Southern Chilie Date: May 22 1960
Magnitude: 9.5 and over 1000 mile long on Fault
Damage: 1,655 Deaths
58,000 Houses Where Destroy
at least 3,000 injured

21. Tsunamis
What is Tsunamis? (pronounced Tsoo-nah-mee)-is a wave
train, or series of waves generated in a body of water by
an impulsive water column.
What are the Possible Scenario that can Generate a
Tsunami.
Earthquakes
 Land slides
Volcanic Eruption
 Meteorites

22. • Tsunamis can be generated by an
earthquake when an open ocean travels
in a shallower water near the coast in a
vertical displacement of the ocean floor.

27. There are two Types of Tsunamis
Average Tsunami or Mini Tsunami-When it Strike
Land, Most of the Tsunami Has a more than 10ft
high
Mega Tsunami-When it Strike Land,most of the
Tsunami More than 300ft high.