what types of wave are gererated by earthquakes?
http://www.google.com/#q=wave+are+gererated+by+earthquakes
Anyone know the all answers??
The types of waves generated by earthquakes are known as seismic waves. Seismic waves can be divided into two main categories: body waves and surface waves.
1. Body Waves: These waves travel through the Earth's interior and are the first to be generated during an earthquake. There are two types of body waves:
- Primary waves (P-waves): These waves are the fastest and therefore the first to be detected by seismographs. P-waves cause a back-and-forth motion of particles in the same direction as the wave is traveling, resulting in a compressional effect. They can travel through solids, liquids, and gases.
- Secondary waves (S-waves): These waves are slower than P-waves and arrive at seismographs after the primary waves. S-waves cause particles to move in an up-and-down or side-to-side motion, perpendicular to the direction of wave propagation. They can only travel through solids.
2. Surface Waves: These waves propagate along the Earth's surface and are responsible for most of the damage caused by earthquakes. There are two types of surface waves:
- Love waves: These waves move in a side-to-side, horizontal motion, similar to a snake slithering across the ground. Love waves are the most destructive surface waves, causing the ground to move violently from side to side.
- Rayleigh waves: These waves produce an elliptical, rolling motion similar to ocean waves. Rayleigh waves cause the ground to move both vertically and horizontally, resulting in a circular or elliptical motion.
To detect and measure seismic waves, scientists use instruments called seismographs or seismometers. These devices are strategically placed around the world to monitor and record seismic activity, providing vital information about earthquakes.