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.
A Tsunami is caused when large amounts of water are displaced, usually occuring from seismic activity e.g. Earthquakes and Volcanic Eruptions. It can also be caused be caused by landslides or underwater explosions.