The most dense layer of the atmosphere is the troposphere is the most dense layer because it is at the bottom of the atmosphere. The troposphere is where all our weather happe â¦ ns. It also has the highest air pressure. But more specifically, the earths atmosphere is most dense at the surface.
Earthquakes on faults like these may cause tsunamis in the Puget Sound region. 'Deep' faults Deep faults can occur where two tectonic plates collide and one of the plates is forced beneath the other.
february 27th 2012 default most tsunamis are caused by underwater earthquakes but not all underwater earthquakes cause tsunamis in order for the underwater earthquake to cause a tsunami the earthquake must rank at 6 75 or higher on the richter scale