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The data recorded as zigzag lines in a seismograph is called
seismogram
Rayleigh waves was discovered by
Lord Rayleigh/ John William Strutt
It is the fastest surface wave.
Love wave
Wave which is responsible for the damage and destruction associated with earthquakes.
Surface waves
A body wave that travel only in solid medium.
S waves/ Secondary waves
A body wave that can travel in all types of media.
P waves/ Primary waves
Seismic waves that move down to the interior of the Earth.
Body waves
It is an energy wave that is caused by rapid fracture of the rocks or an explosion deep under the ground.
Seismic Waves
A vibration from the Earth is caused by a sudden release of energy.
Earthquake
A break or a fracture in the Earth's crust and along the break there is a significant movement happening.
Fault
The image shown is the
Marikina Valley Fault/ West Valley Fault
A fault that does not display any seismic activity for more than 10,000 years.
Inactive Fault
A fault that is likely to become the source of other earthquakes.
Active Fault
How do faults occur?
A fault occurs when the rocks are stressed.
The image shown is a
Reverse Fault
A type of fault wherein rock layers on opposite sides of a fault slide pass each other horizontally.
Strike-slip Fault
It is a place on the Earth's surface where the earthquake started. It is located above the focus.
Epicenter
It is a point beneath the Earth’s surface where the rock breaks and the earthquake starts.
Focus
It is the energy released by an earthquake.
Magnitude
The strength of an earthquake as perceived and felt by the people in a certain locality.
Intensity
A series of waves caused by earthquakes or undersea volcanic eruptions.
Tsunami
A device used to record earthquakes.
Seismograph
The image shown is a
Normal fault
What causes an Earthquake?
When a fault suddenly moves, an earthquake occurs.
PHIVOLCS stands for
Philippine Institute of Volcanology and Seismology
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