2. Seismic Waves
Seismic waves are vibrations of the earth caused by the
sudden release of energy stored in rocks that have been
deformed by forces that originate from moving tectonic
plates.
4. Body Waves
Body waves refer to the
vibrations that travel through
the interior of the earth. T
Surface Waves
Refer to vibrations that travel
at the surface of the earth.
They can also travel at the
surface of the mantle and
core.
5. Two types of Body Waves
P wave, or compressional wave,
is a seismic body wave that
shakes the ground back and forth
in the same direction and the
opposite direction as the direction
the wave is moving.
P Waves
P waves travel through solids and
liquids, but they travel faster through
solids.
Fastest among all the waves
6. An S wave, or shear wave, is a
seismic body wave that shakes the
ground back and forth
perpendicular to the direction the
wave is moving.
S Waves
Waves produce vertical and
horizontal motion in the ground
surface.
Slower than the P wave
S-waves cannot travel through
liquids.
Two types of Body Waves
7. Two types of Surface Waves
named after Augustus Edward
Hough Love,
Love Waves
moves the surface from side to
side perpendicular to the direction
the wave is traveling
8. Two types of Surface Waves
Rayleigh Waves
Rayleigh waves include both longitudinal
and transverse motions that decrease
exponentially in amplitude as distance from
the surface increases.
The existence of Rayleigh waves was
predicted in 1885 by Lord Rayleigh, after
whom they were named
