These are waves given off after a earthquake. These can be used to find the epicentre (the middle) of the earthquake. There are two types of seismic waves:
P-waves-
These are waves that are transverse.
P- waves are faster than S-waves.
P-waves can travel through solid and liquid.
S-Waves-
S-waves are longitudinal waves.
They are slower waves than P-Waves.
They travel ONLY through solids.
A process called triangulation helps scientists to find the centre of the earthquake:
First they use siesmometres to detect P-Waves and S-Waves.
Then scientists put three stations (at least) in the places where they detected the seismic waves.
Finally they draw distance arcs around them. The place where the arcs cross is the centre.
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Physics Revision
Non-FictionI really struggled with Physics core GCSE so may be you do as well. for that reason I have put together a revision guide to help your revision. I hope you enjoy it.
