Seismic Waves
There are three types of seismic waves.... P-waves, S-waves and Surface waves. You will learn facts about each of these waves on this page and you will be surprised about how much you will learn. Like what wave is the fastest, and much more!
Primary Waves
Primary waves or P-waves are on of the three seismic waves. The primary waves are the the fastest waves out of all three and cause a slight vibration, that would warn you that an earthquake is or might be coming. Primary waves can travel through solids, liquids and gas. So you'd think that it can go through the earth but.... your wrong! it can't because of a thing called shadow zones. They are spots around the inner layers of the earth that keep the waves out. Primary waves make zig zag movement.
Secondary Waves
Secondary waves or S-waves are the second of the three waves. They travel the second fastest and cause a bit more of damage than the primary waves. But they can only pass through solids. The secondary waves make an up and down movement.
Surface Waves
Surface waves are the last of the three seismic waves. They are the slowest of all the waves, and cause great damage because they have a great rolling motion. Since they are on the surface they cause damage like roads being ruined and buildings being torn down.