Vocabulary Chapter 2
Earthquakes and Volcanoes
Name____________________
Lesson 4- Earthquakes
B) Alpide belt-
This earthquake belt runs from Western Europe to Central Asia.
A) Compression waves-
First and fastest waves produced in an earthquake. They are also called P (Primary) waves. They move in a jackhammer motion.
B) Shear waves-
Second waves to strike an area. Also called S (Secondary) waves. They travel slower than P waves. They move in an up and down roller coaster motion.
Lesson 4 continued
C) Surface waves-
These are the last waves to strike an area. They are the slowest waves and are confined to the surface of the Earth. They produce the most damage to man made materials. There are two kinds of surface waves; 1. Love waves and Rayleigh Waves.