Waves that travel in the rocks below the surface of the earth are called body waves, and there are two types of body waves: primary, or P, waves, and secondary, or S, waves. The S waves, also known as shearing waves, cause the most damage during earthquake shaking, as they move the ground back and forth.arthquake, shaking of the earth's surface caused by rapid movement of the earth's rocky outer layer. Earthquakes occur when energy stored within the earth, usually in the form of strain in rocks, suddenly releases.
Confidence votes 198. You technicaly become a teenager at age 13, because it ends with teen, but puberty begins around 10 if you are going by when they hit puberty. Was this answer useful? Bekah213.
Posted: 07/12/2012 5:50 pm EDT Updated: 07/13/2012 9:23 am EDT. Shutterstock. There's a reason that teen movies are so full of awesome adventures and misadventures -- being a teenager is the perfect time for those fun, crazy things you would (probably) never do as an adult.You only live once (#yolo), and you're only a teenager once, so make these years of friends and freedom count.efore you officially enter adulthood and turn 20, create a teenage bucket list of all the things you want to do and experiences you're dying to have.