1. Seismic Waves By:

2. What is a Seismic Wave? Waves that originate from collision of 2 tectonic plates Measured by a seismograph

3. The types of waves Three types of waves P waves S waves L waves

4. P waves P stands for primary Classified as a body wave P waves are the first waves to occur Originate from epicenter( the center of shock) Faster than S waves Can pass through solids, liquids, and gases

5. P waves Longitudinal waves Ground crumbles when P waves hit surface Travel 6.0 km/s or 3.7 mi/s

6. S waves S stands for secondary Comes second after P waves Classified as a body wave Transverse waves Originate from epicenter (center of shock) Can only pass through solids

7. L waves Also called love waves Named after scientist A.E.H. Love Classified as surface waves Travel along Earth’s surface Most destructive wave Slowest of all waves Originate from hypocenter

8. Credits Houghton Mifflin California Science (our science textbook) Aaron’s research report “Earthquakes, How and why they Occur” (see Aaron for details)