5
Earthquakes
everything you need to Know about them
Earthquakes
Earthquake
IN this slide you will be intro to earthquakes
Submarine earthquakes
Sea earth quakes
Our Locations
famous earthquakes
Organization
Why they happen
Submarine earthquakes
sea earthquakes
A submarine undersea or underwater earthquake is an earthquake that happens underwater at the bottom of a body of water pretty much always in the ocean. When the rough spots can no longer hold the sudden release of the built-up motion releases, and the sudden movement under the sea floor causes a under water earthquake.Sea earh quakes can trigger tsunamis.
Famous quakes
Current
Standings
the sanFrancisco Quake
The growing forces on the Pacific and North American tectonic plates a horizontal slip. occurred suddenly at 5:12 A.M. local time on the San Andreas Fault for a distance of about 248 miles. Most of the wooden frame buildings survived the earthquake they did not survive the fires that burned for days and through of hundreds city blocks.
Tokyo, Japan: September 1, 1923 (Magnitude: About 8.25)
The years following the San Francisco disaster a Japanese seismologist tried to tell his older colleagues that Tokyo should be prepared for another earthquake. His warnings were not listed to and in 1923 a great earthquake caused extensive damage in Yokohama and Tokyo by direct shaking and by fires .
Chile: May 22, 1960 (Magnitude: About 9)
Chile: May 22, 1960 (Magnitude: About 9)
This was one of the two largest earthquakes in terms of seismic moment in 100 years. At the time, there were few instruments operating that could measure very long surface waves.From records it was apparent for days after this earthquake that the shock made the whole Earth Shake.
why they happen
Why they happen
Earthquakes usually occur on the n of big sections of the Earth's crust called tectonic plates. The plates slowly move over a long lengths time. Sometimes the edges which are called fault lines get stuck but the plates keep moving. Then pressure starts to build up where the edges are stuck and then the pressure gets strong enough that plates will very fastly move move causing an earthquake.