Class L
Earthquake
movement of plate caused earthquake. fault is
the main reason. It has three types that create an earthquake, normal: when the
land moves down. Reverse: when land moves up and strike-slip fault when land
moves side to side. Epicenter and focus, and focus is where the earthquake
start but the different between them is that epicenter above the earth surface
and focus is under the earth surface. There is seismograph that draws the
earthquake waves with different magnitude (size of earthquake). Seismic waves
have three different types of waves; P-wave is the movement fast back and
forth. S-wave is the movement slow up and down. L-wave is dangerous move both
back and forth (side to side). Tsunami tidal wave caused by movement of the
fault and transform boundary if the slide was under the water. However
earthquakes are dangers and causes must harmful natural disaster.
1)
What is
earthquake mean?
Earthquake is movement caused by
fault (normal (side to side) mal, reverse and strike-slip fault).
2) What
are the three types of seismic waves?
There are three different type of fault such as P-wave,
S-wave and L- wave.
2)
What is epicenter
and focus?
Epicenter is surface above the focus
Focus
is the earth surface under both is where an earthquake starts.
4)
What are instruments that measure earthquake wave called?
Seismograph
is the instrument that measures the earthquake wave.
5)
What causes a Tsunami?
Tsunami caused by movement of the fault and transform boundary if the
slide was under the water.
