Earthquakes

It shows that P waves travel faster than S waves.

migration across land bridges

A travel time graph can be used to find the distance from the epicenter of an earthquake.

Ten times

Violent shaking from an earthquake can cause soil and rock on slopes to fail and cause a landslide

1,526,578

P Waves

The Richter Scale

in the same direction as that the wind blows

pacific ocean

The succession of waves is called a tsunami.

composition of meteorites

magnitude of past earthquakes in the area

P waves, also called primary waves, are the first waves to be registered on a seismograph. The S waves, or secondary waves, are the second and slower wave to register on the seismograph. When locating an earthquakes epicenter seismologists take the first reading of the P wave, and then take the reading from the S wave. At the station of where the earthquake was recorded, seismologists draw a large circle from where the earthquakes epicenter could be. TO exactly located the earthquakes epicenter there needs to be at least 3 dfferent staions where the earthquake hit to determine its epicenter using the S and P time interval. 

area with older brick structures

It would stop earth's rotation.

Showed that the tidal forces needed to move continents would stop earths rotation.

His evidence was incorrect.

magnitude

True

measurement of the amplitude of the largest seismic waves

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