Science Blog: Run here comes the earthquake blog!

   An earthquake is a result of when two plates collide.What happens is that when they collide and start to build pressure.Then it is released and it is in the form of an earthquake.An earthquake releases different types of waves.The waves are called Seismic waves.There are three types of seismic waves.They are called Primary waves,Secondary waves and Surface waves.

   The first wave I will explain are the primary waves.Primary waves are the fastest waves and the first to be detected.You can detect an earthquake by using a seismogram.It tells you where the epicenter.The epicenter of an earthquake is above the focus on the surface.The focus is the center of an earthquake.

                          Here is a picture of a Primary wave.

This is what a seismograph looks like

There is also a richter scale.They use it to measure the strength or magnitude of an earthquake.It has numbers from 1 to 10 is the weakest and 9 is the strongest.

                         Here is what a ritcher scale looks like.

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   Now the Secondary waves.Secondary waves make the ground vibrate.They come a few seconds after the primary waves.They are stronger than the Primary waves,but they are slower.

                        Here is a picture of a Secondary wave.

Last but not least the Surface waves.They are the slowest waves,but the strongest.They make the ground move in a spinning motion.They can make buildings collapse.They can also be called Love waves

Here is a picture of a Surface wave.