A sizemograph is used to mesure the sizemic waves under the earths surface
Earthquake generated waves are called seismic waves. These are waves of energy that travel through the Earth's layers. Their velocity depends on the elasticity and density of the medium that they travel through.
vibration that travels through earth carrying the energy released during an earthquake.
Primary Waves or P waves come first and they are the quickest and travel through earth's interior. So if there is an earthquake in China the P wave will go through the earth and onto the other side in a couple of seconds and scientists know this because only a p wave can travel through liquid, solid, and gas and the interior of the earth is made up of semi-molten rock, molten rock and solid rock so we kind or know how the earth is inside.
Earthquake waves are transmitted through materials in earth and along earth's surface , also known as seismic waves .
There are two types of seismic body waves that travel through the earth when an earthquake occurs. P-waves and S-waves. When an earthquake occurs it has been observed that there is a zone at the opposite side of the earth where P-waves are detected but S-waves are not. S-waves are not able to travel through liquids where as P-waves can and as such it is believed that the shadow zone is caused by the presence of a liquid outer core.
Seismic Waves.
Earthquake generated waves are called seismic waves. These are waves of energy that travel through the Earth's layers. Their velocity depends on the elasticity and density of the medium that they travel through.
Body Waves
its the c waves
These are known as seismic waves.
Seismic waves are any waves that travel through the Earth. As such all earthquake waves are seismic waves, however not all seismic waves are caused by earthquakes.
vibration that travels through earth carrying the energy released during an earthquake.
energy reachs earth surface through seismic waves: P waves S waves and Surface waves
S-waves (shear) from earthquakes cannot pass through liquid, P-waves (pressure) from earthquakes can pass through liquid. Seismic data show a total shadow of S-waves directly opposite the point at which an earthquake happened, but no shadow of P-waves directly opposite the point at which an earthquake happened, Therefore liquid inside the earth is blocking the S-waves from getting into this shadow area.
by their boundaries
Seismic waves consist ofP waves which travel through the Earth fast. They compress the medium they travel through;S waves which also travel through the Earth, shearing the solid Earth as they go. S waves do not travel through liquid;Surface waves which can cause the Earth to undulate like water waves or surface waves that cause the Earth to shear.
earthquake waves travel through the earths crust.